twenty of the meningiomas contained very low titers ( mean , 45 fmol/g of tumor ; range , 0-201 fmol/g of tumor ) of a nonspecific cytoplasmic [ 3h ] estradiol binding component , whereas 26 of the tumors contained high titers of specific high-affinity cytosol [ 3h ] promegestone ( r5020 ; progesterone ) binding sites ( mean , 1476 fmol/g of tumor ; range , 0-8328 fmol/g of tumor ) .
C0010834
cytoplasmic
C1383501
cytosol