File:Hill1924 plate28-2.jpg: Difference between revisions
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==Plate 28== | |||
Figs. 33 a, 33 6, 33 c—Blastocyst 38, sections 1/2, 16/1, and 2/2 (x 400). In fig. 33 a, which passes through the central region of the embryonal ecto- derm (e.ect.), the covering trophoblast has disappeared and a slight depression is present on the surface of the ectodermal mass, the cells of which are now assuming a columnar arrangement. The covering trophobla3t (c.tr.) is still present over the more peripheral portion of the embryonal ectoderm (figs. 33 6 and 33 c). | |||
Fig. 34.—Blastocyst 42. Section 7/2 ( x 420). sh.ect., shield-ectoderm. | |||
Revision as of 16:32, 22 July 2015
Plate 28
Figs. 33 a, 33 6, 33 c—Blastocyst 38, sections 1/2, 16/1, and 2/2 (x 400). In fig. 33 a, which passes through the central region of the embryonal ecto- derm (e.ect.), the covering trophoblast has disappeared and a slight depression is present on the surface of the ectodermal mass, the cells of which are now assuming a columnar arrangement. The covering trophobla3t (c.tr.) is still present over the more peripheral portion of the embryonal ectoderm (figs. 33 6 and 33 c).
Fig. 34.—Blastocyst 42. Section 7/2 ( x 420). sh.ect., shield-ectoderm.
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