from this study , it was shown that : ( 1 ) lam and coll iv immunostained epithelial basement membranes in carcinomas were correlated to the presence of estrogen and progesterone receptor antigenic sites within the tumors , with a significant decrease of the positive staining in er-ica negative tumors in comparison to er-ica/pr-ica positive tumors .
C0022984
lam
C0004799
basement membranes