Estrogen-induced growth stimulation has not previously been demonstrated in estrogen
receptor (ER) cDNA transfected human cell lines in contrast to breast cancer cell lines …

Estrogens play an important role in breast cancer and the effect of estrogen on growth of
breast cancer cells has been extensively studied. However, only little information is …

Estrogen responsiveness of breast tumors can be correlated with the presence or absence
of the estrogen receptor (ER). Breast cancer cells that contain ER are, in general, responsive …

Epidermal growth factor (EGF) and estradiol (E2) are important mitogens in breast epithelial
cells, and expression of epidermal growth factor receptor (EGFR) and estrogen receptor …

Regulation of breast tumor proliferation depends in a large part on a variety of hormones
and growth factors. In this report we show that estrogen and antiestrogen modulate …

Estrogen is essential for the growth of the normal mammary gland and most estrogen
receptor (ER)-positive mammary carcinomas. To better understand the differences between …

In breast cancer, epidermal growth factor receptor (EGFR) expression is inversely correlated
with expression of estrogen receptor (ER)(Fitzpatrick et al. 1984; Sainsbury et al. 1985; …

There has been increasing evidence which suggests that abnormal expression of the
estrogen receptor (ER) protein in nonmalignant breast tissue may be important in the …

Epidermal growth factor receptor (EGFR) is a transmembrane receptor whose
overexpression in breast cancer predicts for poor prognosis and is inversely correlated with …

Since sex steroid hormones and growth factors are known to modulate the proliferation of
breast tumors, we have studied the effects of estrogen and progestin, their antagonists, and …