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Fig. 5. Appearance of the embryo with its yolk-sac duct, and the implantation site

The yolk-sac contains a collection of erythrocytes in its lumen. The distal portion of the yolksac duct is being constricted off from the remainder. Chorionic villi in the upper part of the ﬁgure can be seen to be branching. Streamers of syncytiotrophoblast are in process of forming a trophoblastic shell. Some degeneration of the uterine glands is visible. x 71.

Reference

Lewis BV. and Harrison RG. A presomite human embryo showing a yolk-sac duct. (1966) J Anat. 100(2): 389-96. PMID: 5954785

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Paper - A presomite human embryo showing a yolk-sac duct

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Revision as of 23:18, 6 August 2017 (view source) Z8600021 (talk \| contribs) (Fig. 5. Appearance of the embryo with its yolk-sac duct, and the implantation site. The yolk-sac contains a collection of erythrocytes in its lumen. The distal portion of the yolksac duct is being constricted off from the remainder. Chorionic villi in...)		Latest revision as of 23:18, 6 August 2017 (view source) Z8600021 (talk \| contribs) mNo edit summary
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	Fig. 5. Appearance of the embryo with its yolk-sac duct, and the implantation site. The yolk-sac contains a collection of erythrocytes in its lumen. The distal portion of the yolksac duct is being constricted off from the remainder. Chorionic villi in the upper part of the ﬁgure can be seen to be branching. Streamers of syncytiotrophoblast are in process of forming a trophoblastic shell. Some degeneration of the uterine glands is visible. x 71.		==Fig. 5. Appearance of the embryo with its yolk-sac duct, and the implantation site==

			The yolk-sac contains a collection of erythrocytes in its lumen. The distal portion of the yolksac duct is being constricted off from the remainder. Chorionic villi in the upper part of the ﬁgure can be seen to be branching. Streamers of syncytiotrophoblast are in process of forming a trophoblastic shell. Some degeneration of the uterine glands is visible. x 71.