1. Peterson OW, Hoyer PE, Van Deurs B. 1987. Frequency and distribution of estrogen positive cells in normal, non-lactating human breast tissue. Cancer Res 47:5748–5751.
2. Ricketts D, Turnbull L, Ryall G, Bakshi R, Raswon NSB, Gazet J-C, Nolan C, Coombes RC. 1991. Estrogen and progesterone receptor in the normal female breast. Cancer Res 51:1817–1822.
3. Markopoulus C, Berger U, Wilson P, Gazet J, Coombes RC. 1988. Oestrogen receptor content of normal breast cells and breast carcinoma throughout the menstrual cycles. Br Med J 296:1349–1351.
4. Korach KS. 1994. Insights from the study of animals lacking functional estrogen receptor. Science 266:1524–1527.
5. Murdoch FE, Fritsch M, Gorski J. 1988. The estrogen receptor: mechanism of action and relationship to human breast cancer. ISI Atlas of Science: Pharmacology, pp. 267–275.