Extraembryonic membranes
extraembryonic membranes
- 胚膜，胚体外膜（日本語）
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Definition
Glossary of "Life (9th ed.)" by Sadava et al. (2011)
- Four membranes that support but are not part of the developing embryos of reptiles, birds, and mammals, defining these groups phylogenetically as amniotes. (See amnion, allantois, chorion, and yolk sac.)