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The embryo is now 1.0 - 1.5 mm in size. {{Carnegie stage 8 links}}

...the [[Harvard Collection|Harvard Embryological Collection (H.E.C.)]] and [[Carnegie Collection]]. ...were studied; of those between 3.0 and 6.6 mm., forty-four series in the [[Carnegie Collection]]. The series in the Harvard Collection which best displayed the

...® later published a detailed description of the aortic clusters of the pig embryo. Meanwhile I had observed them also in chick embryos of 3 to 4 days’ incu ...ogic studies of Schulte™ on the cat embryo, those of McClure” on the trout embryo, and the studies of Huntington" on the development of the lymphatics in amn

...e, in which it opened in the naso-pharynx. In the development of the human embryo we see these three stages reproduced.<ref> See Professor J. E. Frazer, Lanc ...ysiol. 1906, vol. 40, p. 400 (Ossific. of Palate). See also references, p. 159,</ref> At the end of the 5th week the olfactory organ is exposed on each si

...will experience an increased frequency, if not among the accessions to the Carnegie Collection, at least in the cases reported. For, although the first case of ...the doubtful class! Furthermore, he also insisted upon the presence of an embryo or fetus as absolutely essential.

[[Carnegie stage 8]] ...: the primitive pit, the notochordal canal, and the neurenteric canal. The embryo is presomitic, i.e., somites are not yet visible.

...e free to use our judgment in methods of fixation and preservation. If the embryo is perfectly fresh or possibly living, we use, of course, the most refined ...straight and other measurements and weights also are taken. The age of the embryo is estimated on the basis of weight, crown-rump, and foot length, and the e

...bryo 391|Carnegie No. 391]] | [[Week 4]] | [[Somitogenesis|8 somites]] | [[Carnegie Collection]] [[Book - Contributions to Embryology|Contributions to Embryolo ...n. Wash. Publ. 362, Contrib. Embryol, 17, 1-67). Plaster models now at the Carnegie laboratory were made by [[Embryology History - Osborne Heard|O. Heard]] und

* '''Contributions to Embryology''' - [[Book_-_Contributions_to_Embryology|Carnegie Institution of Washington Series]] A historic series of papers published by the Carnegie Institution of Washington early in the 20th Century.

...Mall describes the human embryos in the collection that would become the [[Carnegie Collection]]. There is also a [[:File:1904 - Catalogue of the collection of [[Carnegie Collection]] | [[Carnegie Embryos]]

...describes the development of the human sympathetic nervous system using [[Carnegie Collection]] embryos: {{CE460}}. ...cated, were made on human embryos included in the [[Carnegie Collection|'''Carnegie Embryological Collection''']]. It is a real pleasure to express my indebted

...y Atlas of the 13-mm. Pig Embryo. (Prefaced by younger stages of the chick embryo.) The Wistar Institute Press, Philadelphia, iv & 104 pp. ...ength in the testicles of certain common mammals. Anat. Rec., Vol. 31, pp. 159-169.

....jpg|90px|left]] This historic 1941 paper by Gilmour describes early human embryo blood formation. ....065 x 0.045 mm. Age about 16 days, probably slightly younger than Peters’ embryo (1899).

...2 paper by Patten describes early development of heart in the {{chicken}} embryo. ...another as far as could be determined, were available for the WOI'l{. One embryo in each of these sets was reserved for study as a cleared and stained entir

:'''Links:''' [[Human Embryo Collections]] | [http://sydney.edu.au/medicine/museum/mwmuseum/index.php/Wi ...ch. f. Anat. u. Physiol., Analt. Abt., 1896., and the Kroemer-Pfannenstiel embryo " Klb."</ref>

...human embryos in detail ([[:Category:Teacher-Bryce Embryo 2|Teacher-Bryce Embryo 2]]) and compares these two with the other known (named) human embryos of t =IV. The Development of the Vascular System in the Human Embryo prior to the Establishment of the Heart=

...ranes and appendages, and the establishment of those relations between the embryo and the maternal organism which are such fundamental characteristics of the ...aternal uterine walls, and in the early and extensive relation between the embryo and this new source of nutrition.

...emely important because it implies that the mitochondrial endowment of the embryo is exclusively maternal in derivation. ...onsidering the possibility that fertilization of a polar body, followed by embryo development, may take place (57).

Department of Embryology, Carnegie Institution of Washington, Baltimore, Mn. ...th its associated tiny mass of protoplasm, which alone will make the chick embryo, becomes all but lost on the surface of the yolk. But that speck of protopl

==Peters's Embryo - Yolk-sac== ...that Peters's specimen has no allantois. In describing another very young embryo he had recorded that "as compared with the embryonic shield, the allantois

...d in a majority of gilts in which all of the uterus was removed except one embryo and its corresponding portion of uterine horn on the 12th day of pregnancy. The Corpus Luteum of Pregnancy As It Is in Swine. Carnegie Inst. Contr. Embryol. 5: 69.

...and blastulation appear normal. However, gastrulation is abortive, and the embryo soon dies (Moore, '41, '46, '47). ===6. Relation of Early Cleavage Planes to the Antero-posterior Axis of the Embryo===

Fuss, A. 1911. Uber extraregioniaire Geschlechtzellen bei einem Menschhchen Embryo von vier wochen. Anat. Am. 39, 407. Gregory, P. W. 1930. The early embryology of the rabbit. Carnegie Inst. Wash. Contrib. to Embryol. 21, 141.

...mative cells, i.e., all the cells enter directly into the formation of the embryo's body. ...ral margins of which are attached the non-formative, auxiliary cells (fig. 159, blastoderm-formative cells, periblast-non-formative; also figs. M5K, L; M7

...ed follicle, but which have usually completely disappeared by the time the embryo begins to implant in the uterus In some species true luteal cells are added ...esus i ith special reference to menstruation and pregnancy Cont ti Fmb rot Carnegie In i Hash 23 t-iGl — — and Corner G SS |ig47) Uemosal irf the corpus lu

Acting Lecturer and Demonstrator in Anatomy, University College, London; tate Carnegie Research Fellow in Embryology, and Assistant in the Depariment of Anatomy, This stage is represented by one embryo 25 mm. in length, the cranial extremity of which has been reconstructed in

...after the 60 mm embryo stage|Plate 13. Placental structure after the 60 mm embryo stage.]] The numerous contributions from the Carnegie Laboratory of Embryology on implantation of the blastocyst and on placental

...ants from the Penrose Fund of the American Philosophical Society, from the Carnegie Corporation of New York and from the University of Pittsburgh. ...ndogenous stimulation and remarked that if he had been able to observe the embryo under more favorable conditions before its circulation had been disturbed,

ribs in a 30-mm. CR embryo, for some cervical and upper and of the tympanic annulus of a 42—mm. CR embryo by Mall

...viously primitive character was seen in the thoracic cord of a 5—mm. human embryo, it seemed worth While to examine the suitable younger specimens available ...by grants from the Penrose Fund of the American Philosophical Society, the Carnegie Corporation of New York and the University of Pittsburgh.

Carnegie Institution of Washington ...n of data was made by the statistical staff of the Department of Genetics, Carnegie Institution of Washington (Cold Spring Harbor, Long Island), and by Mr. Wil

embryo (Heuser and Streeter, 1941 ; Hertig embryo extract prepared from 19- to 20day-old guinea pig embryos (Blandau and

...s thesis by Stewart describes development of the blood supply to the human embryo basal ganglia. =The Development of the Blood Supply to the Human Embryo Basal Ganglia=

Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland ...ovulationem, leaving only five and one-half days‘ actual development of the embryo to birth. The rate of development is compared with Eutherian mammals.

namely, is there a separate germinal plasm set apart in the early embryo which used to refer to those germ cells which possibly segregate early in the embryo,

...ls sie stehenden Wirbelthieren, erseheinen aber aueh bei dem menselilieben Embryo nieht vor Ablauf der ersten beiden Monate nach der Bmpfangniss. ...it they communicate with the exterior by a common opening. In the 4.75-mm. embryo (fig. 7) the naso-hypophyseal invagination has shifted toward the dorsal si

embryo without the cooperation of the female, and whether the result is male enlarged compartment where the egg or developing embryo may be retained.

...empt was made to destroy just enough tissue along the dorsal aspect of the embryo to insure complete elimination of the neural-crest material and leave the v ...rophotographically in figures 1 and 2, which are taken from sections of an embryo of the chick (14) ^ which was subjected to operation at the close of the se

| These are links to other normal Carnegie Collection numbered embryos available on this educational site. {{Carnegie numbered embryo links}}

structural relationships between the developing embryo and the uterus. These comprise a succession of stages of placental metabolic demands of the developing embryo and fetus.

...h he believed was the essential element in that it contained the preformed embryo in an intangible way. That is, the sperm animalcule of the ram contains a l ...rged capsule is soon formed which assumes the size and shape of the future embryo at the time of hatching (fig. 123). (See Tavolga, '50.) In the brook lampre

Carnegie Institution Of Washington, Department Of Embryology, The Johns Hopkins Univ in the embryo is controlled by a hormone,

A. In a salmon embryo after Furst. The position of the cell body. They share in its trophic functions, as is nerve of an embryo of

...presents the direction of the first outgrowth of the cochlear pouch of the embryo. As shown by Streeter ('07) for the human, this first growth of the cochlea 125.7 125.5 159.6 152.0

...yolk. This substance contains the principal foodstuffs for the developing embryo. Studies on the yolk of the hen’s egg indicate that it contains water (50 ...ter chapters that the animal pole marks the anterior end of the developing embryo and the vegetal pole marks the posterior end. There is also reason to belie

the development of the embryo. ...he blood volume and kindred properties in pregnant sheep. J. Physiol., 95, 159.

From the Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland ...ation of the cavities in the cartilaginous capsule of the ear in the human embryo. Amer. Jour. Anat., vol. 22.

University of Cincinnati Carnegie Institution Ruth Stocking Lynch. The cultivation in vitro of liver cells from the chick embryo. Twenty-five figures 281

...ATION OF THE CAVITIES IN THE CARTILAGINOUS CAPSULE OF THE EAR IN THE HUMAN EMBRYO== Department of Embryology, Carnegie Institution of Washington, Baltimore,

h) Communications of the "Institut International d'Embryo logie" (Embryological section of the I.U.B.S.) P List of members of the "In ...Uruguay. S. America. •BURNS. R. K. B.S., Ph.D., Prof. — Dep. of Embryol., Carnegie Inst.

are comparatively numerous in the embryo, and in the adult the resting A, From a 7 mm. embryo; B, from one of 26 mm.; ch,

...p. 1391. Corner, G. W. 1915 Corpus luteum of pregnancy as it is in swine. Carnegie ...ctomjr in relation to the secondary sex characters of some domestic birds. Carnegie Inst. Washington, 243. Hegar, K. 1910 Studien zur Histogenese des Corpus lu

...Whether or not the ganglion cells observed by Rubaschin ('03) in the chick embryo represent cells of the nervus terminalis is problematical. This writer desc In the human embryo Johnston found essentially the same central relations as in the pig, but th

...ent peculiarly favorable m.aterials for studies of this character, for the embryo becomes functional at a very early stage of differentiation, in this respec ...m of response to any sort of excitation applied to the trunk region of the embryo, viz., a swim,ming reaction, and the same neurones are involved throughout

Mabel Bishop. The nervous system of a two-headed pig embryo. Twenty figures 379 159

Staff Member, Department of Embryology, Carnegie Institution Of Washington. Baltimore. Maryland 159 days

...IC SAC AND ITS TOPOGRAPHICAL RELATION TO THE TRANSVERSE SINUS IN THE HUMAN EMBRYO Department of Embryology, Carnegie Institution of Washington

...r H. Slifer, Insect development. If. Mitotic activity in the grassliopjier embryo. Two figures 013 ...trient organs, or pseudoplacenta, until shortly before birth. At birth the embryo is a little more than one-third the adult body length and bears strongly de

Embryo: nine to fourteen days’ incubation 12 ...nd. The realiza- tion of the expectation of finding cortical tissue in the embryo- logical stages of the right ovary was previously anticipated by Willier (

...erning certain cytological characteristics of the erythroblasts in the pig embryo and the origin of non-nucleated erythrocytes by a process of cytoplasmic co ==The Development Of The Rectum In The Human Embryo==

...tion of the marsupial blastocyst with the trophoblast of the Eutheria, the embryo of the former, therefore, being without trophoblastic covering. ...on in similar conditions independently discovered by Patterson CIO) in the embryo of the Tatusia.

University of Cincinnati Carnegie Institution WARREN H. LEWIS Carnegie Laboratory oj Embryology, Johns Hopkins Medical School

...) stated that there are present in the developing islet cells of the sheep embryo minute safranophile granules. These have since been observed by Laguesse (' Pankreas beim nienschlichen Embryo. Arch, mikros. Anat., Bd. 64. Kyrle, J. 1908 Ueber die Regenerationsvorgang

Edwin G. Conklin. Body size and cell size. Twelve figures 159 ...ennent have made experiments in which the paternal influence in the hybrid embryo was diminished. Tennent states that in the cross between Hipponoe and Toxop

...probably for the carotids." Thus the evi ' See the figures of the skull in embryo marsupials, edentates, insectivores, etc., as figured by Broom, Parker and ...n so far as they lie between the pterygoids and the quadrates. Likewise in embryo mammals the cartilaginous alae temporalis are interpreted by Broom ('09) as

149.9 (140.8-159.) 154.7 (139.4-164.6) 4 145.3 (120.6-159.9)

...o him the problem: If the spermatic fluid might stimulate the heart of the embryo in the process of fertilization, why might not other fluids produce the sam ...the diverse modifications which it undergoes, all the other organs of the embryo. '

...hem to enlarge and function. Again, that large venous network in the early embryo which is associated with the azygos vein and which later disappears may be ...pment of the lymphatics of the lungs of the embryo pig. Contrib. Embryol. (Carnegie Inst.), Wash., 1916, IV, 47.

...hns Hopkins University and Director of the Department of Embryology of the Carnegie Institution of Washington. We who in thought lingered at his bedside during ...ion, the directorship of the newly created Department of Embryology of the Carnegie Institution of Washington. The University of Michigan honored him and honor

Howard Brown Stough. Modified mitosis in the chick embryo. Eight plates (sixty figures) 535 1. The embryo of the chick develops in its own egg entirely apart from the mother. For th

Translation by Jos6 F. Nonidez Carnegie Institution of Washington 8 1917 The microscopic structure of striped muscle in Limulus. Pub. 251, Carnegie Institution of Washington, pp. 273-290.

Fig. 23 Caudal end of a bo nun. Alustelus embryo. Note that the pores of canals of the head. In a 36 mm. embryo the lateral sensory

...f the Scala tympani, Scala vestibuli and perioticular cistern in the human embryo. Nine figures 299 Embryo 12.84

The youngest embryo in which any of the air-sacs appear as In the same embryo may be seen the first indication of the

Translation by Joat V Nonidu Carnegie Institution Wuhington Translation by Jos6 P. Nonidez Carnegie Institution of Washington

...er den Bau der Spinalganglienzellen bei einen viermonatlichen menschlichen Embryo. Arch. f. mikr. Anat., Bd. 59. 1901. ...ells through the following consistent explanation: while, in the course of embryo- logical development, the majority of ganglion cells become very much enlar

C. W. M. PoYXTER. Some observations on wound healing in the early embryo. Twelve figures ...nd Atterbury. Bursa and tonsilla pharyngea; a note on the relations in the embryo calf. Eight figures 251

Aided by the Carnegie Institution. ...us structures in the wall of the cerebral vesicle and neural tube of a cat embryo undoubtedly relate to mitochondria.

1.159 Carnegie Institution of Washington

...and it is entirely possible that this region of the central cavity in the embryo was much more suggestive of the fourth ventricle. Judging from the adult al ...Tcr. and Dean that Polistotrema possesses well-developed ventricles in the embryo; the expansion being fully as great as in a similar stage of Petromyzon. As

...ogy, With An Appendix On The Arteries And Veins In A Thirty Millimeter Pig Embryo== Ordinarily, the student is shown two dimensions of a piece of tissue or embryo, and left to imagine the third. Though whole mounts of chick embryos are ha

Sthrtevant, a. H. 1919 Inherited linkage variations in the second chromosome. Carnegie Inst., Wash;, publ. 278, pp. 305-341. Beckwith, C. J. 1908 The earH history of the egg and embryo of certain hyclroids. Biol. Bull., vol. 16, pp. 183-193.

...bryos were arranged accord- ing to measurement rather than age. The oldest embryo of the first series was 9.4 mm. in length, and the later series were select ...al cavity and in the pharynx, buds that resemble mature buds of the oldest embryo studied in all essential details except size. The later maturing of the tas

12. Osborne, T. B., and Mendel, L. B.: Publications of the Carnegie Institution of Washington, 1911, Bull. No. 156. Fertility. — In our series there were 159 (79.5^) married and 41 (20.5^) immarried women. Of the former, 101 (63.5^)

...A study on the depth of penetration of ultraviolet light-ray energy in the embryo of the tadpole 323 ...gland form accessory glands. According to Keibel and ]\Iall, in the female embryo few glands are formed, three being the maximum number. These may undergo de

159) 160) ...idently would have shown less conformity if they had been obser\^ed in the embryo stage. (JSTewmann's Fig, 38.)

==On The Development Of The Blood-Vessels Of The Brain In The Human Embryo== ...teries had been injected with Prussian blue, which, together with numerous embryo pigs injected alive or immediately after death, form the basis of this stud

III. A laboratory timing clock. One figure. .VoonsTUs'F. Scharfk 159 Iv*\ K. Wai.i.in. .V teaching model of a 10 mm. pig embryo. Three figures. 295

...region of the normal and of a wingless fowl. Eleven figures (three plates) 159 129.7 137.7 153.7 149.3 159.7 166.3 173.3 185.0 196.7 209.7 223.3 222.7 229.0 243.3 249.7

...and and the phylogeny of the flexor digitorum sublimis tendon. Two figures 159 ...minal viscera through the spinal column; "\'eraguth COl) described a human embryo with ectopia of the spleen and intestines. Finally, in 1917, Williams descr

...hn Bruce MacCallum. Also Book Reviews, Courses, Notes and Appointments 129-159 Fig. 1. Cephalic veins of a late embryo of Tropidonotus natrix, head 7.5 mm. long. X 24. After Grosser and Brezina,

P. E. Smith. The effect of hypophysectomy in the early embryo upon the growth and development of the frog. Ten figures 57 ...in to function, lymph begins to collect in the intercellular spaces of the embryo and, as we know, is subseciuently collected by a set of newly formed vessel

Herald, St. .Toseph. 1918, xxxvii, 159-163. normal, living embryo or animal is most easily aecomplisheil

a. Chromosomes in the embryo 3 a. Chromosomes in the embryo

...ples of the development of the systemic lymphatic vessels in the mammalian embryo 399 ...in E. Reinkb. Note on the presence of the fifth aortic arch in a 6 mm. pig embryo 453

arrow indicates the direction of the axis of the future embryo, b, bristle. ...de of the blastoderm is away from the observer, and the axis of the future embryo is ill a diagonal position, as indicated in Fig. 1. These fig-ures (A of th

...ems to be required for growth and development of the nervous tissue in the embryo. ...Institute for Medical Research. By cultivating in vitro parts of the chick embryo lens containing cells from the iris, a pure outgrowth of epithelial cells w

...hyme cells is relatively low, as their origin from the basal region of the embryo might lead us to expect. This being the case, they are less affected by sli ...(Child, 16 c). According to Boveri ('01 a, '01 b) the apico-basal axis of embryo and larva coincides with the axis of the growing oocyte in Strongylocentrot

...the earliest neuro-muscular responses to tactile stimuli in the amphibian embryo. During the season of 1907 these experiments were continued upon embryos of ...with a most important phase of behavior, namely, its very beginning in the embryo. If, for instance, there is any such thing as a ^'simple reflex," such as S

...esearch rooms" at Woods Hole wishes to acknowledge his indebtedness to the Carnegie Institution for the opportunities thus presented for the carrying on of thi 159.2iii5.19

...r regions of the body. The sweat glands first make their appearance in the embryo in these regions. These areas also lend themselves readily to an extensive TAILLESSNESS IN THE RAT 159

...e take place, as is shown in the caudal end of the Wolffian body of a deer embryo of 6.4 mm. (fig. 3), where the increased growth of one limb of the transver ...uricular canal, and the adult relations reproduce essentially those of the embryo. Hence their comihon histological characters in the adult and the intimate

...e from each and consequently no defects except in size would appear in the embryo. Experiments on later stages, however, indicate absence of localization as ...ved and the remaining one will develop into a perfectly normal but smaller embryo. Morgan- succeeded in producing such embryos and I have also been able to d

...s R. Stockard. The artificial production of eye abnormalities in the chick embryo. Two plates 33 ...uming a defect in the absorption of the primitive right aortic arch in the embryo. Absorption occurs ordinarih' distal to the point of origin of the right su

...124:2 from typhoid. Iu Massachusetts during the same time there were only 159 deaths from malaria to 4349 from typhoid, and in Rhode Island 24 to 794. Th 1879 198 159

BouGHTON, Oculomotor Nerve. 159 ...he brain in some species; in others, it enters the ventral surface. In the embryo it is primarily con- nected with the lamina terminalis. It is therefore cal

...inophilies, the fixed mesenchymal cells may also give rise to them. In the embryo, hematopoietic mesenchyme is widely distributed. In the adult the bone-marr ...the mammalian pituitary body. Quart. Journ. Exper. Physiol., 1908, I, 121-159.