Talk:Book - A Very Young Ovum In Situ
CONTENTS
PAGE
Introduction - - 5-g
Consideration of the Reconstruction of the Ovum From
Section 1 to 160 - 10-33
CHAPTER
I. The Mucosa Elevation, which Harbors the Ovum,
and the Decidua Vera - - 34-42
II. The Embedding of the Ovum. The Capsularis.
The Fibrinous Cover ("Gewebspilz" of Peters) 42-51
III. The "Eianlage" and the Ovular Chamber.
("Eikammer") 51-54
IV. The Trophoblast and its Surrounding Blood Spaces.
The Intervillous Circulation 54-64
V. The Syncytium 64-66
Explanation of Figures 67-69
Consideration of the Reconstruction of the Ovum from Sections 1-160
(Table requires formatting)
No. of Section.
Mucous i
Without fibrin cover.
nembrane elevation narbonn
With fibrin cover.
y the ovum.
Epithelium above.
Epithelium beneath?
I.
3
4
like i and 3.
6.
The mucous membrane protuberance which later be comes the ovular
elevation, encircled by epithelium.
7
Mucous membrane becomes thicker.
Epithelium varying in thickness.
8.
Epithelium varying in thickness.
Q.
The well preserved surfact
which a large g
over the elevat
- epithelium in
land opens passes ion.
IO.
Suddenly a thin fibrin cover appears over elevation ("Gewebspilz" Peters'.)
Under which a trace of surface epithelium is to be seen.
II.
Firbin cover increases in thickness toward right.
Over fibrin cover epithelium varying in thickness.
Not clear.
12.
Present.
Blood
vessels.
Glands.
Eianlage.
Illustration.
No. of
Section.
In the small elevation on the surface of the mucous membrane, glands and capillaries plentiful; glands with perfect epithelium.
i.
Capillaries already considerably dilated.
Glands as in i.
3
Numerous capillaries in elevation of mucous membrane surface.
Greatly dilated glands with perfectly preserved epithelium.
Fig- 3
4
like
i and 3.
6.
Blood and capillaries present.
No glands in summit of ovular elevation. Dilated gland in depth of section.
Here the first suspicion of Eianlage by presence of syncytial cells. Accumulation of leucocytes.
7
Dilated capillaries in elevation and communicating bl< ed with syncytial c
X)d spaces infiltrat,ells.
Scattered syncytial cells,
accumulation of leucocytes.
8.
Blood spaces in elevation, whose intervening walls
contain fibrin.
A large gland
opens into elevation on the same
well preserved
surface epithelium.
Scattered syncytial cells.
Tissue of elevation somewhat infiltrated with blood.
Q.
In the mound confluent vessel
spaces.
Infiltrated with trophoblast processes with a layer of syncytial covering.
Fig. 4.
10.
Capillaries become
dilated in elevation.
Glands in elevation and surrounding, numerous and plainly visible. .
The inner blood space in the
ovular elevation surrounded with syncytial cells.
1 1.
Blood spaces as in
1 1.
Mucous membrane elevation harboring the ovum.
No. of
Section.
Without
fibrin cover.
With
fibrin cover.
Epithelium
above.
Epithelium
beneath?
14.
Present.
Band of epi
To the left and
thelium on
under the fibrin
the fibrin
covering sur
15
Present.
cover which
face epithelium.
sinks into the right somewhat
swollen end of the fibrin cover
like the mouth
of a gland.
Instead of as
above, there is
1 6.
Present.
found only a
slight funnel-like depression of
tissue cells anc
blood cells.
Still somewhat
'7
Present.
of a funnel-like depression of tis
sue cells.
Somewhat of a
"
depression cov
1 8.
An entirely structureless
ered with epi
mass.
thelial-like
cells.
To the left un
der the fibrin
cover, epithe
iQ.
' "
funnel-like dep
lium present,
ression still pres
ent. In it or rather between it
and the fibrin cover many blood
cells.
Under the fibrin
Present.
cover a long
epithelial like
band, which
At certain parts aggrega
probably originates from the
20.
tion of leucocytes. Oc
syncytial offshoots which closely
casionally large syncy
approach the fibrin cover and
tial cells, but without a
may easily be mistaken for uter
nucleus.
ine epithelium.
Blood vessels.
Glands.
Eianlage.
Illustration.
No. of
Section.
Trophoblast with syncytial
offshoots.
Blood present.
14.
Decidual cells between the dilated capillaries and glands.
Processes of trophoblast with
offshoots.
Fig- 5
15
1 6.
At the periphery of the ovular chamber, syncytial cells
found.
>7
On the border of the various capillaries syncytial cells, partly arising from endothelium.
18.
Same.
Numerous elongated and some
greatly dilated
glands.
Same.
Fig. 6.
19.
Trophoblast with syncytial
offshoots pass well up under the fibrin covering.
20.
14 CONSIDERATION OF THE RECONSTRUCTION OF THE OVUM FROM SECTION 1-160.
No. of Section.
Mucous membrane elevation harboring the ovum.
Without fibrin cover.
With fibrin cover.
Epithelium above.
Epithelium beneath?
Present.
Becoming steadily longer and lies like a worm with its thick end on the right of the ovular elevation.
Epithelium varying in thickness on the fibrin cov
An epitheliallike band coming from both
sides under the
fibrin cover.
Most likely syncytial cells.
23.
24 and 25.
In elongated part, connective tissue arrangement. Leucocytes, and in the club end fibrin only. Between these two parts as well as towards the ovular elevation many red blood cells.
Epithelium Under the fib varying in rin cover long
thickness on streaks of epithe fibrin cov- thelial-like er. cells.
Close on to these the long stretched syncytial cells with large nuclei reach, which come from the trophoblast.
The elongated part becomes more and more organized, the club end is still fibrinous but is already infiltrated with white blood cells.
Epithelium varying in thickness above.
The same.
26.
The fibrin cover becomes Epithelium constantly longer and ' varying in has at its right end a but- thickness, ton-like thickening containing many red blood cells. The left end a structureless elongation. Therefore only the middle part is organized.
As in 23.
27.
Fibrin cover very much elongated, on the right end knob-shaped, folded like a corpus luteum, in the center of fold, blood cells. The left end sends out an offshoot and becomes steadily longer.
Epithelium varying in thickness fi b r i n
An epitheliallike band under fibrin cover. Under the elongated left
o n cover.
end of the fibrin cover this band contains a few cells with a distinct nucleus and under the same, running parallel with it, are seen the large syncytial cells.
28 and 29. same as 27 30.
Fibrin cover as in 27. Blood found in fold of knob end.
At the base of fibrin cover are found syncytial clubs with many nuclei. Close by, an epithelial-like band.
Epithelial-like band to left under fibrin cover. Probably having some connection with the giant syncytial cells.
15
CONSIDERATION OF THE RECONSTRUCTION OF THE OVUM FROM SECTION 1-160.
Blood vessels.
Glands.
Eianlage.
Illustration.
No. of
Section.
Vessels dilate, their
walls become
thinner and rupture. Blood escapes and passes
into the neighboring glands.
Eianlage, with projection, now seen cut laterally.
Fig- 7
22.
Endothelium of the
capillaries enlarged. Contains
large nuclei.
Glands to the side
of the ovum may
be seen almost in
their entire
length. Various
others filled with
blood.
Eianlage has a projection
with a broad end. Ovular
chamber filled with blood.
23.
"
"
Eianlage with trophoblast
buds and projections which
anchor themselves in the
periphery of the ovular
chamber. Projections with
trophoblast nuclei and syncytial covering.
24 and 25.
At the broad base
the blood vessels
become more confluent and take up
the protruding
trophoblast processes.
To the left and
right of ovum excellently preserved, some broken open and
filled with blood.
Eianlage, larger and takes on
a more definite form.
26.
Toward the ovular
chamber the confluent blood vessels are now divided by an arch-like
arrangement of
fibrin.
Eianlage as in 26, passing from it to the fibrin cover are five trophoblast processes with offshoots of syncytium. In the surrounding of the Eianlage decidual cells.
Fig. 8.
27.
Passing from the Ei
blast processes and s
free blood, likewise i
anlage to the knob e
yncytial offshoots are
n the fold of the fibr
Eianlage manifold, elongated and somewhat compressed by free blood,
nd of the fibrin cover, trophoseen. Between the offshoots
n cover.
Section
26-28.
Fig. Q and
Fig. 10.
Section
3Fig. n.
28 and 29
same as
27.
30.
16
CONSIDERATION OF THE RECONSTRUCTION OF THE OVUM FROM SECTION 1-160.
No. of
Mucous membrane elevation harboring the ovum.
Section.
Without
fibrin cover.
With
fibrin cover.
1
Epithelium
above.
Epithelium
beneath?
Between fibrin cover and
3>
periphery of the ovular
chamber, many processes
of syncytium with many
nuclei.
32.
Between fibrin cover and neighboring border many syncytial giant cells.
Band of epithelium not distinct.
To the right under the fibrin
cover, presumably a remnant of epithelium.
33
Present.
Below and above fibrin cover no
band of epithelium left.
34
Giant syncytial cells reach
to fibrin cover.
Absent.
Only toward
and under fib
35
Present.
rin cover are 4
epithelial-like
formations.
36.
Present.
Elongated with clubshaped end.
Is similated by rows of epithelial-like syncytial cells.
Present.
Under the knob
37
.
Elongated with knob end,
which appears like a
thick fibrin band.
Band of varying thickness.
end an epithelial-like band
surrounded by
blood cells.
The elongated part of the
fibrin cover here resem
38.
bles some of the previous specimens. The knoblike end is more fibrinous
but is already beginning
to be infiltrated with
,
leucocytes.
Blood
vessels.
Glands.
Eianlage.
Illustration.
No. of
Section.
Tropholbast processes. Coat
elevated by blood and consists of two layers. Row of
nuclei with syncytial covering.
31
Trophoblast processes with offshoots pass toward periphery, where fibrin cover lies. Coat elevated, 2 layers: Langhans' cells and syncytial covering.
Fig. 12.
32.
Eianlage with partly elevated coat.
33
34
Blood vessels disintegrating.
Processes of trophoblast.
35
Mesoblast and Ectoblast (Trophoblast and Syncytial cells) pass under entire fibrin cover along the wall of the ovular envelope.
36.
Owing to the increasing size of the
ovum the sur
rounding blood
vessels become
more and more
disintegrated,
to the ovum but doe
ovular chamber.
To the right and
left of ovum two
glands. In the
middle of these
a third gland
which gradually
dilates and passes
s not open into the
Fig. 14.
37
The same.
The syncytial cells pass up
to the ovum periphery and
make the impression of surface epithelium.
38.
18 CONSIDERATION OF THE RECONSTRUCTION OF THE OVUM FROM SECTION 1-160.
No. of Section.
Mu
Without fibrin cover.
- ous membrane elevation har
With fibrin cover.
boring the ovum.
Epithelium above.
Epithelium
beneath?
39
the one side of wh arising from the t
Present.
Under the long offshoots
of the fibrin cover a
long blood vessel present,
ich consists of broad cells
'ophoblast.
Over the knob
end a wormlike cover.
40.
i
The elongated part of the fibrin cover is made up of distinct tissue. The knob end is arranged exactly like a corpus luteum.
Over the knob
end a band
varying in
thickness.
Under the knob
end reaching
from the border, an epithelial band.
41 like
40.
Same.
Under the entire fibrin cover, large svncy tial cells are seen.
42.
Under the knob end syncytial giant cells.
43
The knob end of the fibrin
cover is infiltrated with
leucocytes.
45
Under the fibrin cover the
row of syncytial cells
have become considerably larger.
47
'
Present.
49
Present.
gated syncyti
might be mist
epithelium.
Under the fibrin cover elonal cells, which
aken for surface
5
The knob end becoming
shorter and rounder.
Elongated syncytial cells below.
19
CONSIDERATION OF THE RECONSTRUCTION OF THE OVUM FROM SECTION 1-160
Blood vessel.
Glands.
Eianlage.
Illustration.
No. of
Section.
Left gland with broad opening. Right gland surro die one which reac with blood.
unds entire ovum. The midhes to the ovum becomes filled
Fig. 13.
39
From the trophoblast an extension of syncytial cells pass to the epithelial-like band on the border under the knob end.
40.
As in 40.
41 like 40.
Covering with syncytial buds.
42.
43
of the ovum can be the entire length tc
The two glands to
the right and left
followed almost in
their openings.
Covering has two rows.
45
A broad part of the contact a double ce visible. Here as in which anchor them;
ovum lies under the
1 row (Langhans* eel
48 one' sees large of
elves into the peripri
Processes of trophoblast with
offshoots,
fibrin cover. At the point of
,s and Syncytium) are plainly
"shoots, from the trophoblast,
ery of the ovum.
Fig. 1 6.
47
Offshoots with covering which become anchored. (Section 50.)
49
In the periphery of the ovum toward the middle of the mucosa uteri, an enormously dilated vessel.
Eianlage with offshoots as heretofore.
5'
20
No. of Section.
Mu
Without fibrin cover.
cous membrane elevation hai
With fibrin cover.
boring the ovum.
Epithelium above.
Epithelium
beneath?
52.
Under fibrin cover enormous syncytial cells.
53
The fibrin cover becomes
more compressed. (Almost structureless.)
Giant syncytial cells below.
54
The knob end rounder and
thicker, under the same
thick syncytial cells, with
many nuclei.
55 and 56.
Under the fibrin cover the syncytial cells constantly increasing in number.
57
Under entire length of fibrin cover larger and
smaller syncytial cells are
found.
Over knob end
of fibrin cover a band of
epithelium
varying in
thickness.
58 and 59.
Fibrin cover compressed, shortened and thickened. Beneath syncytium.
60.
structureless knob
has become organi
syncytial cells are
The fibrin cover now presents itself as an almost
the rest of the fibrin cover
zed. Under this cover the
constantly multiplying.
6 1 and 62.
Among these syncytial cells trophoblast cells are observed.
63.
The knob end like a button. Under the same rows of syncytium, which pass almost to the outer border of the covering.
Blood vessels.
Glands.
Einlage.
Illustration.
No. of
Section.
Band of ectoblast with Langhans' cells and syncytium.
In Eianlage peculiarly arranged cells.
Embryonic rudiment?
Fig. 26.
52.
Eianlage lies plainly on the
periphery with a covering
of two layers.
53
The enormously dilated blood vessels as in 51.
Trophoblast processes with syncytium anchored to periphery of ovum.
54
55 and 56.
Dilated capillaries.
well preserved unc due to the confluen Enormously dilated present in 51.
Beautifully arranged, partly
ergoing dissolution
t blood vessels,
blood vessels still
The albuminous mass in the
Eianlage compressed by
blood in the ovular chamber.
57
To the left and
right of ovum,
glands with openings.
Eianlage with trophoblast
processes and syncytial offshoots.
58 and 59.
The enormously dilated blood vessels divided into
three spaces by
the decidual tissue.
Eianlage with trophoblast processes. Syncytial covering.
Fig. 17.
Fig. 27.
60.
The two glands to the left and right are distinctly visible.
Eianlage, as in 60.
6 1 and 62.
The same.
Eianlage with trophoblast
and offshoots.
Fig. 1 8.
63.
No. of
Section.
Mu
Without fibrin cover.
cous membrane elevation hai
With fibrin cover.
boring the ovum.
Epithelium above.
Epithelium
beneath?
65 and 66.
The knob-like end becomes flatter.
67 and 68.
The knob becomes still flatter and is hardly visible in 68.. Beneath it a layer of syncytium.
69.
The knob but a small structureless fibrinous elevation. Layer of syncytium beneath it.
70-73.
The knob is as 69. Beneath it syncytium, which might be mistaken for uterine surface epithelium.
In 73 a layer of
epithelium
varying in
thickness.
74
The knob as in 73.
As in 73.
75
becomes longer an cover.
The fibrinous structureless
mass, which has been
but a tiny knob, again
d lies on the organized fibrin
76-79.
The fibrinous structureless mass becomes steadily longer. Syncytium is seen beneath this mass.
A band of epithelium varying in thickness.
Similates uterine surface epithelium.
80.
The structureless mass becomes steadily longer and begins to appear as before. (See sections 10-25.)
An epitheliallike band.
Si.
82 and 83.
84.
Fibrin cover with a band lying above it.
A few cells beneath. (Epithelial cells?)
Blood
vessels.
Glands.
Eianlage.
Illustration.
No. of
Section.
65 and 66.
Glands plainly visible to the right and left.
Eianlage toward the summit with trophoblast.
67 and 68.
Glands plainly visible to the left; to the right they are displaced.
Eianlage with beautiful tropholbast processes and offshoots with syncytium.
Fig. IQ.
69.
The same.
The same.
70-73.
Numerous syncytial cells
scattered in the surrounding of the ovum.
74
The same.
Eianlage with trophoblast
processes.
Fig. 20.
75
'
76-79.
The same.
The same.
Fig. 21.
80.
Polymorphous and pressed
together by Eianlage and
ectoblast. The latter arranged like numerous
prongs. Trophoblast processes.
(View
of
entire ovum.)
81.
Large trophoblast processes
with syncytial offshoots
extending to the border
and walls of the blood vessels.
82 and 83.
Trophoblast processes with
syncytium plainly visible,
In the periphery of the ovular chamber large syncytial cells.
84.
Section.
Without
fibrin cover.
With
fibrin cover.
Epithelium
above.
Epithelium,
beneath?
85.
Under fibrin
cover a chain
86
and
87.
The fibrin cover becomes longer and on its right end has a knob - like thickening.
Epithelium
spreading
above it.
.of cells (Epithelium?) At
the right border a distorted
gland. Blood
has entered
it.
88.
band a fine layer ol
ed syncytial cells c
Fibrin cover larger.
Toward the epithelial
fibrin is seen;- then elongatccasionally trophoblast.
A long band
of epithelium
over it.
Under it a torn
epithelial band
however in
better pres
ervation.
Under the fib
rin cover, os
89.
Present.
tensibly an epithelial layer.
Present?
90-92.
Elongated.
Present.
Immediately
below it are
biids of syncy
tium.
93
Larger.
4
Epithelium above and beneath
the fibrin cover.
94.
Distinct.
95 and 96.
The same.
Present.
Present.
Blood
vessels.
Glands.
Eianlage.
Illustration.'
No. of
Section.
To the right between the ovular
chamber and the
adjoining glands
new capillaries
are constantly being opened.
The large gland to
the left of the
ovum reaches to
the border. The
almost in its enti
becomes lost th
periphery.
inland to the right can be seen
re length. The middle gland
e nearer it approaches the
85.
Confluent capillaries at the border
becoming dissolved.
Also from the endott near the border ol cells are seen prol syncytial cells.
Long glands to
the right and left.
The middle one
does not quite
extend to the
ovum.
elium of the vessels the ovum cavity, ferating, similating
86 and 87.
The offshoots of a long trophoblast plug radiates
toward a vessel.
88.
etrates an adjoin wall has been pen its neighbor. Lar at other places.
The syncytium passes from
a trophoblast plug and pening vessel. After the vessel
etrated it communicates with
ge clusters of syncytial cells
89.
The three glands as in 86 and 87.
border. The sync group of vessels in corroded by two s
Long trophoblast processes
with syncytium at the ends.
Becomes anchored at the
vtium corrodes a vessel. A
the border are likewise being
yncytial offshoots.
Fig. 28.
90-92.
Vessels in dissolution in the border.
The glands to the
right are seen in
their entire
length. Likewise the left. The
middle glands
disappear.
Long trophoblast processes
anchor with syncytium.
Fig. 22.
93.
The middle gland becomes lost toward the border of the ovum.
Mesodern distinct and polymorphous. At the border
large trophoblast plugs with
syncytial covering become
anchored to the ovum periphery.
94
The middle gland
at the border of
the ovum with
large epithelial
cells.
Trophoblast at the border of
the ovum (near the fibrin
cover) has two hook-like
plugs between which is
found considerable blood.
Fig. 23.
95 and 96.
26
CONSIDERATION OF THE RECONSTRUCTION OF THE OVUM FROM SECTION 1-160.
No. of
Mucous membrane elevation harboring the ovum.
Section.
Without
fibrin cover.
With
fibrin cover.
Epithelium
above.
Epithelium
beneath?
97 and 98.
Fibrin cover has sunk into the underlying tissue.
Bands of epithelium varying in thick
Bands of epithelium.
ness.
99.
Fibrin cover elongated.
Likewise.
Bands of epithelium varying in thick
ness.
100.
Present.
Fibrin strip has
a layer of epithelium.
Likewise
below.
IOI.
Fibrin cover depressed. To the left epithelium.
Epithelium (?). beneath the fibrin strip.
Under the fib
1 02.
~
Small fibrinous elevation.
rinous elevation, strips of
epithelium (?)
103.
Fibrin cover entirely absent.
Only a tiny particle thereof present.
Short bands, (Surface epithelium?)
104
and
105.
Absence of fibrin
cover.
1 06 and 107.
The same.
Surface epithelium fairly well preserved.
1 08.
The same.
I 10
and
The same.
in.
27.
CONSIDERATION OF THE RECONSTRUCTION OF THE OVUM FROM SECTION 1-160
Blood vessels.
Glands.
Eianlage.
Illustration.
No. of
Section.
cells close to the ov
lost however the cl
the ovum. To th
the left i to 2 glanc
Middle gland has
large epithelial
um, which become
aser they approach
- right 2 glands, to
s.
Trophoblast processes with
syncytium.
97 and 98.
Three glands.
Trophoblast processes with
syncytium.
99.
Three glands. The middle one begins to disappear.
Trophoblast processes. Syncytium reaches to the border.
100.
Three glands.
Beautiful tropholbast processes.
101.
The middle gland is seen plainly reaching to the ovum.
Trophoblast processes reach
almost to the border of the
ovum. Syncytial buds
reach to the under border of
fibrinous elevation.
1 02.
The middle glands not so plainly visible.
The trophoblast and syncytium reach to the band
beneath the beginning of
the fibrin cover.
103.
The middle gland reaches almost to the ovum.
Fig. 24.
104
and
105.
Two new glands are seen on the border of a dilated vessel.
Trophoblast processes with
syncytium and giant cells.
106 and 107.
seen. In later sec
comes more plainly
length.
The end of a large
gland is plainly
tions this gland bevisible in its entire
Trophoblast processes.
1 08.
Capillary spaces.
The gland very
distinct, the
opening however
has become less
distinct. Other
glands with their
epithelium have
become destroyec
through hemorrhage.
Buds of syncytium.
I 10
and in.
No. of
Section.
M
Without fibrin cover.
ucous membrane elevation ha
With fibrin cover.
rboring the ovum
Epithelium above.
Epithelium
beneath?
I 12.
Not a suspicion ol
a fibrin cover.
113.
The same.
i 14-1 i 6. 1 17 and 1 1 8.
The same.
IIQ.
A trace of fibrin present.
121
and
122.
Not a trace of fibrin except on
ovular elevation.
123.
and 124.
The same.
125-128.
129-131.
132.
133.
Blood
vessel.
Glands.
Eianlage.
Illus
No. of
tration.
Section.
| The mouth of the gland disappears.
In a gland filled with blood, the epithelium cells are swollen, partly enlarged and elevated from base.
Buds of syncytium.
A gland at the border. Close to the pole of the ovum, a gland lined with epithelium and greatly dilated, is seen filled with blood.
113.
Dilated capillaries surround the ovum.
A large long gland close to the ovum
Syncytium anchor.
i 14-1 16 117 and 1 1 8.
The mouths of two glands on top of the ovum.
Delicate processes 'become anchored to the periphery.
119.
Cavernous Wood spaces in the periphery of the ovum.
A gland opening.
Between the cavernous blood spaces the syncytium is arranged in arches.
121 and 122.
Cavernous blood spaces surrounding the ovum.
Many capillaries open in the surrounding of the central blood space.
Two gland openings close to top of the ovum mound.
123 and 124.
To the right of the ovum a gland with a distinct
opening
alone;
capillary.
passes a dilated
The interior of the ovum filled with blood, this is enclosed by arch-like arranged syncytial cells.
125-128.
A number of capil- Glands as in 132. laries open at a place which was previously occupied by the nucleus of the Eianlage and break into discernible glands.
Syncytial cells become less.
In the periphery Still more syncytial cells of the ovular ele- with large well stained nuvation four clei.
glands are plainly visible partly a.) dissolved in capillaries, at their opening or in the center, b.) fairly well traceable in their entire length, c.) not plainly visible, d.) opening not distinct, toward the interior dilation plainly visible.
132.
Capillaries break into glands.
Syncytial cells with large nuclei.
'33
No. of
Section.
Mu
Without fibrin cover.
cous membrane elevation hai
With fibrin cover.
boring the ovum.
Epithelium above.
Epithelium
beneath?
134-136.
137-I39
140.
141.
142 and 143.
The mucous membrane elevation upon which
no fibrin cover is present, shows a few confluent blood spaces in the center, besides this
beautiful glands and numerous blood vessels.
144
and
145.
147.
Rests of surface epithelium.
151.
Divided blood spaces in the ovular elevation.
152.
' 5 1 and
55
Surface epithelium present over ovular elevation.
, 31
Blood vessels.
Glands.
Eianlage.
Illustration.
No. of
Section.
Syncytial cells between the blood
spaces.
Syncytial cells not so numerous.
134-136.
The vessels penetrate the glands.
i 37-' 39
The endothelium of the vessels contain large nuclei, parall lie directly on the v
- 1 with these a few
essels.
140.
Numerous syncytial
cells in the surrounding of thecapillaries.
141.
Greatly dilated.
Four large glands
pass through the
ovular elevation
but much more
distinctly visible tl
b.) elongated; c. 2
In the center of the mound
many syncytial cells and
accumulation of leucocytes.
lan in 132. a.) greatly coiled; nd d.) with distinct openings.
Fig. 25.
142
and
143.
Confluent blood
spaces in the center of ovular elevation.
Gland spaces and
mouths.
A few syncytial cells and accumulation of leucocytes in
the surrounding of the central blood spaces.'
144 and 145.
Dilated confluent
blood capillaries in
the ovular elevation.
Glands dilated.
Between them
accumulation of
leucocytes.
147.
Capillaries greatly
dilated.
In the surrounding ol al cells are present.
Likewise the
glands.
both many decidu
151.
A few very large
syncytial cells
with highly stained
in the more centr
spaces.
nuclei are still found
ally located blood
152.
Central blood
spaces and with
these communicating capillaries.
I5 1 and
155
No. of
Section.
Mu
Without fibrin cover.
cous membrane elevation har
With fibrin cover.
soring the ovum.
Epithelium above.
Epithelium
beneath?
156.
Fibrin with large
ovular elevation.
nuclei passing through the
,58.
In the ovular elevaiton only the borders of the
more centrally located blood spaces can be
seen.
1 60.
Ovular elevation supplied with enormous capillaries.
Uterine surface epithelium present.
Blood
vessels.
Glands.
Eianlage.
Illustration.
No. of
Section.
To the left and
157: Centrally
large blood spaces.
right glandular
spaces partly
filled with blood.
156.
,58.
Detached capillaries.
Numerous glands.
It may here be stated that all the microscopic sections have been embedded with the summit of the elevation produced by the ovum, pointing to the right, as in Fig. 2 ; thus the entrance into the furrow formed by the mucous membrane, also opens to the right. In this manner the meaning of the constantly recurring terms "right" and "left" in the description of the sections, is obvious.