During the first 3 months, which hormone i
题型:单项选择题
问题:
During the first 3 months, which hormone is responsible for maintaining pregnancy
A. Human chorionic gonadotropin (HCG).
B. Progesterone.
C. Estrogen.
D. Relaxin.
During the first 3 months, which hormone is responsible for maintaining pregnancy
A. Human chorionic gonadotropin (HCG).
B. Progesterone.
C. Estrogen.
D. Relaxin.