cells derived from a human epidermoid carcinoma ( kb ) , a pancreatic carcinoma ( panc-1 ) , a simian virus 40 transformed adult human skin-derived cell line ( sv40 fibroblasts ) , and a normal adult human skin-derived fibroblast line released sla when cultured in a serum-free growth medium .
C0007634
cells
C0016030
fibroblasts