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At the time the circulation begins in the chick, the embryo possesses a number of relatively large blood vessels. Thoma ('93) mentions ...s with the venous end of the heart and with the entire dorsal aorta of the embryo opposite the zone of the myotomes." That the heartbeat has much to do with

.... Furthermore, in a preliminary study, we evaluated the capacity of canine embryo PGCs (30 dpf) to differentiate into EGCs. To confirm the canine EGCs phenot ===Primate Primordial Germ Cells Acquire Transplantation Potential by Carnegie Stage 23===

...er by West describes an embryo at 25 somite stage, would be similar to a [[Carnegie stage 12]] (26 - 30 days), caudal neuropore closes, Somite Number 21-29. {{Carnegie stage 12 links}}

...the formation of a single median heart (2, 3, 8). In a three-somite human embryo described by Ingalls (k) , the heart primordia were stated to be united in ...ere noted as small vesicles within the dense mesenchyme in the early human embryo described by Ingalls(U).

At the time the circulation begins in the chick, the embryo possesses a number of relatively large blood vessels. Thoma ('93) mentions ...ve capillary plexus which connects with the heart and dorsal aortae of the embryo. Quoting in part, she

...Corner|George W. Corner]], M.D., D.Sc. Director, Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland, U.S.A. ...ating experiments that ovulation occurs in this phase of the cycle. In our Carnegie Embryological Collection there are five early embryos of the chacma baboon,

...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.

...foetus. Edinburgh. , 1904. Manual of antenatal pathology and hygiene. The embryo. Edinburgh. DANDY, W. E., 1910. A human embryo with seven pairs of somites measuring about 2 mm. in length. Amer. Jour. An

Director, Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland, U.S.A. the cycle. In our Carnegie Embryological Collection there

...[[Carnegie stage 22|Streeter’s Horizon XXII]]), and EH 377, 31.5 mm C-R ([[Carnegie stage 23|Streeter’s Horizon XXIII]]). Both of these embryos had been cut '''Fig. 1''' Ventrocephalic aspect of heart of 31.5 mm embryo showing the superficial cardiac vessels. The arch of the aorta has been rep

...[[Carnegie stage 22|Streeter’s Horizon XXII]]), and EH 377, 31.5 mm C-R ([[Carnegie stage 23|Streeter’s Horizon XXIII]]). Both of these embryos had been cut '''Fig. 1''' Ventrocephalic aspect of heart of 31.5 mm embryo showing the superficial cardiac vessels. The arch of the aorta has been rep

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.

...logue.jpg|200px|alt=Orts Llorca Madrid embryo catalogue|Orts Llorca Madrid embryo catalogue|left]] ...ble us to draw the following conclusions. The truncus appears in the human embryo, between Stages XII and XIII, as a portion of the aortic sac which invagina

V 139 205 4.25 lunar months Length, 139 mm. CR, 205 mm. CH. Age, 4.25 lunar months.

...an study. This embryo (Teacher-Bryce Ovum No. 1) was later classified as [[Carnegie stage 6]] {{Carnegie stage 6 links}}

...n, F. D. 1963. Observations on the organizer areas of the human pre-somite embryo. Anat. Rec, 145, 199. ...LJ. 1930. Human tubal ova; related early corpora lutea and uterine tubes. Carnegie Instn. Wash. Publ. 414, Contrib. Embryoi, 22, 45-76.

{{Waterston1917 embryo table}} ...structions of developing hearts, and particularly his model of the 2.5—mm. embryo of R. MEYER’s collection, which is a most valuable specimen.

...mative cells, i.e., all the cells enter directly into the formation of the embryo's body. ...organforming areas which later enter into the formation of the body of the embryo; auxiliary or non-formative tissue has no part in its composition. All coel

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.

...also taken into account, the ratio is still higher. It seems that the male embryo is not so strong as the female, or else less likely, from other causes, to Davenport, C. B., 1906. Inheritance in Poultry. Carnegie Inst. Wash., pub. 53.