Bocchinfuso, W.F. and others, 2000. Induction of mammary gland development in estrogen receptor-alpha knoclout mice. Endocrinology; 141; 2983–2994; Attwood, C.S. and others, 2000. Progesterone induces side-branching of the ductal epithelium in the mammary glands of prepubertalmice. J. Endocrinology, 167, 39–52.
