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...ther embryos, which have a bearing upon the question will be found on page 278. The drainage of the femoral plexus (fig. 1, rete femorale) is accomplishe ...te mistake, this embryo was referred to in the original paper as Minnesota Embryo H. 16.

{{Carnegie No.20 Header}} Frontal section through the region of the ear in a human embryo 4 mm. long (Carnegie Collection, No. 588, slide 6, row 6, section 6). The section is 15 um thick

...the earlier months are even more rare. Streeter (’19) reported that in the Carnegie collection there were only forty—three specimens, of which all but two we ...hments of the two yolk stalks lay at different regions of the chorion. An embryo was present in each amniotic sac (fig. 1).

2 This twin specimen belongs in the collection of the Carnegie Institution, where it is listed as no. {{CE1126}}. Acknowledgment is due th ...Schwalbe’s (’06) well-known reconstructions, based upon the Spee 1.54-mm. embryo, are purely hypothetical. Beside the present case, the only other illustrat

2 This twin specimen belongs in the collection of the Carnegie Institution, where it is listed as no. {{CE1126}}. Acknowledgment is due th ...Schwalbe’s (’06) well-known reconstructions, based upon the Spee 1.54-mm. embryo, are purely hypothetical. Beside the present case, the only other illustrat

...ryo femur CS18 to CS23.png|thumb|alt=Human embryo femur CS18 to CS23|Human embryo femur CS18 to CS23{{#pmid:31442281|PMID31442281}}]] ...magnetic resonance imaging. The cartilaginous femur was first observed at Carnegie stage 18. Major anatomical landmarks were formed prior to the initiation of

...m in co-culture experiments, we find that in the context of the developing embryo, the dorsal aortae as well as the paraxial, intermediate, and lateral mesod ** ventral bud later ([[Carnegie stage 13|stage 13]] - [[Carnegie stage 14|stage 14]])

...later (Giacomini, 1893), when considering chorionic vesicles devoid of an embryo, which had evidently undergone hydatiform degeneration, again spoke of the Johnson (1917) found the villi on a chorionic vesicle, containing an embryo with 24 somites, variable in size and 1.1 to 1.3 mm. long in the region of

...r ear. These human embryos are [[Carnegie Embryos]] and fetuses from the [[Carnegie Collection]]. ...f the Scala Tympani, Scala Vestibuli and Perioticular Cistern in the Human Embryo=

...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

...ube with two dilatations: one represents a ruptured chorionic sac with its embryo still inside: the other sac was unruptured, entirely distinct from the firs ...a tubal pregnancy described by Mall ('15) and ]\Ieyer ('20), listed in the Carnegie collection as no. 825 (fig. 2). Externally the tube bore a single swelling

Limb development has been studied in the embryo extensively as a model for how limb pattern formation, {{limb axis}}, is es ...limb bud. We will focus on how mesoderm cells in precise locations in the embryo become determined to form a limb and express the key transcription factors

...to tissues that are lost during development. It includes several of the [[Carnegie Collection]] embryos in the figures. ...thology, Harvard Medical School, Boston, and the Department of Embryology, Carnegie Institution of Washington, Baltimore.

The measurements of the embryo are as follows: C.R., crown-rump or sitting height; C.H., crown—hee1 or s <div id="Carnegie Embryo 6"></div>

...pment of the trachea and esophagus and includes several embryos from the [[Carnegie Collection]]. Department Of Embryology, Carnegie Institution Of Washington, Baltimore, Maryland

...y Atlas of the 13-mm. Pig Embryo. (Prefaced by younger stages of the chick embryo.) The Wistar Institute Press, Philadelphia, iv & 104 pp. Corner, G. W., 1915. The corpus luteum of pregnancy as it is in swine. Carnegie Inst., Contrib. to E-mbryoL, Vol. 2, pp. 69-94.

...l the cytoplasm is divided into two giving nse to a two cell st ige of the embryo or ovum (Fig 28B and C) Each of the daughter cells contains an equal number ...stage stage F —eight cell stage ( \fter Lev is and Hartman 1933 ) of tf e Carnegie Institution of Washington y c *00

...onare Geschlechtzellen’ in the intestinal epithelium of a four~weeks human embryo. The supposed sex cells were disposed in such a way as to suggest an active ...considered to be germ cells in the lateral plates of mesoderm of a 2.3—mm. embryo, and as these plates were folded under the gut in 2.8-mm. embryos, the germ

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

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.

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

...dly number of which have appeared from the Department of Embryology of the Carnegie Institution of Washington. ...generosity of Dr. Carl G. Hartman from the Department of Embryology of the Carnegie Institution. These three macaque monkeys (Macaca mulatta) were killed on th

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

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,

...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 and the acoustic and facial nerves in the human embryo. Am. Jour.

...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

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

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

...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

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

Staff Member, Department of Embryology, Carnegie Institution Of Washington. Baltimore. Maryland Dharmar.ajan. M. 1950. Effect on the embryo

278-280 days-^ the development of the embryo.

...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==

...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

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.

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

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 (

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

Carnegie Institution of Washington Director of the Department of Marine Biology of the Carnegie

...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 ...behavior and reactions during every stage of development from the time the embryo left the q^^ membranes till it attained the adult condition, in its behavio

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

Mabel Bishop. The nervous system of a two-headed pig embryo. Twenty figures 379 1.278

...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

...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.

...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

278 ...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

...Mall. "Medical Education in the United States and Canada," Abraham Flexner 278 ...ples of the development of the systemic lymphatic vessels in the mammalian embryo 399

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

food substances. Carnegie Institution of Washington, Publication ...ich was studied primarily by physicians to explain the growth of the human embryo, can likewise receive little attention in the medical school. These subject

...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

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.

...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

...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

...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

...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

...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

...e also points out that the systemic lymphatic development in the mammalian embryo is "by no means confined to the immediate environment of degenerating embry ...plexus. Most of the vessels composing the plexus lie longitudinally in the embryo along the line of the aorta and dorsal aortic roots, and out of this plexus

...idently would have shown less conformity if they had been obser\^ed in the embryo stage. (JSTewmann's Fig, 38.) ...commonly occurs to a greater or less extent during the development of the embryo. The sand was spriid^led with water as often as necessary. It was not neces

...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 Contributions to Embryologj-, Carnegie Institution of Washington,

...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

...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 ' Tennent, Publication 132, Carnegie Institution, 1910.

...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.

...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

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

...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.

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

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

...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

...minal viscera through the spinal column; "\'eraguth COl) described a human embryo with ectopia of the spleen and intestines. Finally, in 1917, Williams descr ...ech., Bd. 11. Good, J. P. 1912 Spina bifida in the neck region of a ferret embryo 8 mm.

12. Osborne, T. B., and Mendel, L. B.: Publications of the Carnegie Institution of Washington, 1911, Bull. No. 156. ...lsulphonephthalein) and Colloids {Trypan Blue) Injected into the Mammalian Embryo. By George B. Wisiocki

...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