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Fig. 42. Median longitudinal section through the blastoderm of a pigeon, 36 hours after fertilization process of gastrulation
Patterson, from Lillie.
A, anterior end of the blastoderm;B, blastopore; E, entoderm; EC, ectoderm; F, floor of the blastocoel; G. W., germ wall; M, yolk masses in blastocoel; N, nuclei of germ wall; O, extension of blastoderm beyond germ wall; P, posterior margin of blastoderm; R, region of invagination and inflection of cells around dorsal lip of blastopore; V, vitelline membrane; Z, anterior limit of invaginated and migrating entodermal cells. S.C.
Anterior half of section is shown above, the posterior half below.
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Reference
Bailey FR. and Miller AM. Text-Book of Embryology (1921) New York: William Wood and Co.
Cite this page: Hill, M.A. (2024, April 18) Embryology Bailey042.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Bailey042.jpg
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