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== Week 1 == [[File:Week1 summary.jpg|thumb|Week 1 and 2 development]]

# [[#1. Human Embryology History|'''Human embryology history''']] ==1. Human Embryology History==

{{Carnegie No.20 Header}} ...or studying the general question of growth of cartilage, for two reasons: (1) there are, on account of the intricacy of form of the labyrinth, many kind

....ncbi.nlm.nih.gov/pubmed/12807866?dopt=Abstract Development of the heart: (1) Formation of the Cardiac Chambers and Arterial Trunks] by Moorman et al. ( ...&Ausgabe=235779&ProduktNr=224197 Embryonic Cardiac Morphometry in Carnegie Stages 15-23, from the Complutense University of Madrid Institute of Embryology Hu

...o access during periods of development). Rat development is also generally 1 day behind that of mouse. (The table below gives details relating to the st ...y 20). A string of pearls was seen on days 8-11. The CR length ranged from 1.6  mm (day 11) to 26. 4 mm (day 20). A heart beat was first seen on day

...evelopment of these different portions of the coelom, as well as the early stages of the development of the diaphragm. ...th a transverse section at the level of the fourth cervical ganglion (fig. 1), the nerve was found arising from the anterior roots of the fourth cervica

# [[#1. Human Embryology History|'''Human embryology history''']] ==1. Human Embryology History==

...graphy also came into play, seen mainly associated with embryos within the Carnegie collection. ...s: the wax models are life-sized; the terracotta versions are reduced to a 1:3 scale. Together with the anatomical waxes in the Specola Museum in Floren

...s: black (C57BL/6J), agouti (CByB6F1/J) and albino (BALB/cByJ). When all 4 stages (proestrus, estrus, metestrus, and diestrus) need to be identified, vaginal ...MID19701181}} "In both sEHKO and GFP colonies, increases in body weight at 1 and 2 weeks after timed male exposure more reliably and consistently indica

...int Louis University, Saint Louis, Missouri, and Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland ...ic period of development (the first 7-8 weeks after fertilization) into 23 stages. Each stage was identified by a number of external and internal characteris

...o access during periods of development). Rat development is also generally 1 day behind that of mouse. (The table below gives details relating to the st ==Day 1==

{{Carnegie Collection stage 23 table}} ...er row, [[:Category:Carnegie Embryo 7425|No 7425]]. Lower row, [[:Category:Carnegie Embryo 4570|No. 4570]]. All views are at the same magnification.

...Heard (1891 – 1983) was one of the first to be hired, to the newly formed Carnegie Institute of Embryology in 1913, he was modeller who spent 42 years at the :'''Links:''' [[Carnegie Collection]] | [[Carnegie Stages]] | [[Embryology_History_-_Ziegler_Models|Ziegler Models]]

...cal characteristics of the miniature pig palate at different developmental stages were synchronously verified at the ultrastructural level. Our study provide * '''Axial differentiation and early gastrulation stages of the pig embryo'''{{#pmid:19683851|PMID19683851}} "Differentiation of the

Carnegie Stage 4 (stages 1-23 describing key steps in embryonic development) represents the beginning ...sentially covering the birth canal. This condition occurs in approximately 1 in 200 to 250 pregnancies.

...the [[Harvard Collection|Harvard Embryological Collection (H.E.C.)]] and [[Carnegie Collection]]. ...n of Anatomists, February, 1932; abstract, Anatomical Record, vol. 52, no. 1,pp. 2-3, February 25, 1932.

| [[File:Stage7-sem2.jpg|250px|link=Carnegie stage 7]] | [[File:Stage8_SEM1.jpg|250px|link=Carnegie stage 8]]

...pg|90px|left]] This 1949 historic paper by Hamilton describes the earliest stages of development following fertilisation. {{Week 1 Links}}

The points of special significance in regard to this material are: (1) the relatively longer persistence of the occlusion than has yet been descr ...regards an atresia of the esophagus in the human embryo as abnormal at all stages (p. 368).

[[Carnegie stage 4]] * Probably approximately 0.1-0.2 mm in diameter