Which of the following option is most appropriate regarding formation of Primary villi?
A. Syncytiotrophoblast
B. Cytotrophoblast
C. Extra embryonic mesoderm
D. Both A & B
Answer:D
Which of the following option is most appropriate regarding formation of Primary villi?
A. Syncytiotrophoblast B. Cytotrophoblast C. Extra embryonic mesoderm D. Both A & B