the culture media of three cell lines , a human prostate carcinoma ( pc3 ) , a rat leydig cell tumor ( rice-500 ) , and a rat carcinosarcoma ( wrc-256 ) , that were derived from tumors associated with humoral hypercalcemia of malignancy ( hhm ) , were examined for stimulation of adenylate cyclase in ros 17/2.8 osteoblastic cells and for bone resorptive activity in culture .
C0023601
leydig cell tumor
C0007634
cells