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[[File:Stage_22_image_217.jpg|thumb|300px|Cerebrum development human embryo (week 8, Stage 22)]] | {{Embryo logocitation}}

...uld be clearly timed in the mouse and found in the literature on the human embryo. ...lation and fertilization times were unascertainable so that the age of the embryo is determined by the mating time plus or minus 30 minutes. The time for mat

Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland, and Department of Zoology, ...rvated by the oculomotor. Bonnet (1901) likewise found, in a 16-somite dog embryo, a pair of mesodermal condensations derived from a medial mass of cells at

...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.

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>

...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.

...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

...opment. Here, a detailed step-by-step protocol for extended ex utero mouse embryo culture is provided. The ability to grow normal mouse embryos ex utero from ...nner-cell contacts in the ICM, which activates Oct4 in the preimplantation embryo. Oct4 is highly expressed but unstable at E3.25-LNC, and stabilizes at high

=Part V - The Care of the Developing Embryo= ...embryonic membranes, and in many species, the retention of the developing embryo within either maternal or paternal body structures (Chap. 22).

...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

...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

...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}}

...use of the intrinsic nature of the subject, for the functions of which the embryo or fetus is capable at various times are determined by the growth of the ne ...representation, then, allows us to observe the general growth picture from embryo to adult, and gives us a basis upon which to establish a more detailed anal

:'''Links:''' [[Book_-_Contributions_to_Embryology|Carnegie Institution of Washington - Contributions to Embryology]] | [[Immune System ...eir function; a history of its development in many organs of the mammalian embryo and of its differences in pattern and extent in various animals ; and a fai

...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

...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.

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

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

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

...the early development of the neural folds and sensory anlagen of the human embryo. ...ez and Evans’ (’25) significant monograph on “The development of the human embryo during the period of somite formation, including embryos with 2 to 16 pairs