Which of the following statement(s) is/are true concerning the effect of various hormones on breast physiology?
A.	Estrogen receptors are present only in breast cancer cells
B.	Mammary ductal dilatation and differentiation of alveolar epithelial cells and secretory cells are the result of rising progesterone levels
C.	The early first trimester breast changes are primarily due to the increased progesterone effects of pregnancy
D.	Milk production and secretion after childbirth are maintained by ongoing secretion of prolactin by the anterior pituitary gland
Answer:B
Which of the following statement(s) is/are true concerning the effect of various hormones on breast physiology?
A.	Estrogen receptors are present only in breast cancer cells B.	Mammary ductal dilatation and differentiation of alveolar epithelial cells and secretory cells are the result of rising progesterone levels C.	The early first trimester breast changes are primarily due to the increased progesterone effects of pregnancy D.	Milk production and secretion after childbirth are maintained by ongoing secretion of prolactin by the anterior pituitary gland