the in vitro growth of cells derived from tumors after relapse under treatment with medroxyprogesterone acetate or tamoxifen was markedly enhanced by progesterone or tamoxifen ( cas : 10540-29-1 ) in concentrations corresponding to therapeutical serum levels and in accordance with in vivo resistance to the endocrine therapy applied before cell sampling .
C0007595
growth of cells
C0007634
cell