in cultures of human foreskin fibroblasts most of the cell surface binding sites for 2-chain urokinase are masked and can be exposed by 10 min . incubation on ice at ph 2.5 ( a. bajpai and j.b. baker ( 1985 ) , biochem . biophys . res . commun.133 , 475-482 ) .
C0086418
human
C0042071
urokinase