`` `` 8s '' '' estrogen receptor-forming factor [ ( `` '' 8s '' '' er ) -ff ] , a cytoplasmic factor of cow uterus , which binds specifically with native `` '' 4s '' '' estrogen receptor ( er ) to give `` '' 8s '' '' er under hypotonic ( low salt ) conditions was dissociated in the presence of 0.4 m nascn into two kinds of subunits designated as component a and component b .
C0010834
, a cytopla
C0034804
``