## Abstract There are three fetal membranes in mammals, namely the yolk sac, allantois and amnion, but only the first two form a placenta. In Monotremata (monotremes), Marsupialia (marsupials) and Placentalia (eutherians), the yolk sac transfers nutrients originating from uterine glandular secretio
The pig yolk sac II
β Scribed by W. W. Minuth; K. Tiedemann
- Publisher
- Springer
- Year
- 1980
- Tongue
- English
- Weight
- 700 KB
- Volume
- 68
- Category
- Article
- ISSN
- 1432-119X
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