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By A. M. Hain (Carnegie Research Fellow), The Institute of Animal Genetics, Edinburgh University, ...y defrayed by grants (to A.M.H.) from the Medical Research Council and the Carnegie Trust for the Universities of Scotland.

...0 series and 12 dissected tonsillar regions from the [[Carnegie Collection|Carnegie Institution, Department of Embryology]], and 50 series and 19 dissected ton ...tance. I also wish to acknowledge the generous help of Dr. G. L. Streeter, Carnegie Institution of Embryology, in placing at my disposal abundant material.

...ioned and stained. Of the embryos and fetuses studied, 152 belonged to the Carnegie Institution Department of Embryology. The remaining specimens were from the ...s to Dr. G. L. Streeter for the use of the Embryo1ogical Collection of the Carnegie Institution and supplying figures 15, 16, and 17. I also wish to thank Pro

...indicate the absence of pouches. Weller (30) described a two somite human embryo which according to his description possessed the first pharyngeal pouch. Th Corner (4) described the foregut of a 10-somite human embryo, as being compressed dorso-ventrally with the anterior end immediately unde

...icken}} pulmonary vessel development. [[Book_-_Contributions_to_Embryology|Carnegie Institution of Washington - Contributions to Embryology]] ...this kind some obstacles are sure to be encountered, even in so simple an embryo as the chick. In mammalian embryos these are harder to overcome and offer a

...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

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>

...ltttea associated with 7‘/3- and 9‘/3-day normal pregnancies respectively (Carnegie nos. {{CE8020}}, {{CE8215}}). Unfortunately, these sections, which were sta ===A 12- to 13-Day Pregnancy, Carnegie No. {{CE8558}}, S46-2767===

{{Carnegie stage 7 links}} ...soderm of the stalk in very young human embryos; in the description of the embryo OP (1921) he describes a "Zerfallende Epithelwucherung des Amnions" (1921,

...atic system. Lymph hearts are present also in the tail region of the chick embryo. ...cal tubes begin to form, one set on either side of the median plane of the embryo (fig. 3 32 A and B). Simultaneous with the formation of these primitive, su

...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.

...time when the contractile substance begins to be laid down, but in the pig embryo, according to Bardeen (1900), the musculature is differentiated to a consid ...of certain groups of muscles. The nervus oculomotorius enters in the early embryo a common muscle mass which later splits into various eye muscles supplied b

Hull Laboratory Of Anatomy, University Of Chicago, And The Carnegie Institution Of Washington, Laboratory Of Ernbryolagy, Baltimore ...which appeared in the medial wall of the cerebral hemispheres of the human embryo between the second and the fourth months was under debate from 1868 to 1904

...ntary bone and does not articulate with the sternum, and finally the human embryo, where the clavicle reaches its fullest development. ...to 10.5 mm. are described in the paper now under review. The 13-mm. human embryo corresponds essentially to the 18-mm. pig and 13-mm. cat. The pericardial c

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.

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

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

...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

...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

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,