addition of leupeptin , methylamine and the antitubulin agent nocodazole did not affect the initial rate of association of 125i-labelled epidermal growth factor ( 125i-egf ) to swiss mouse 3t3 fibroblast cells in vitro , but continued incubation with these drugs ( up to 24 h ) led to an increase in cell-associated radioactivity in a time- and dose-dependent fashion .
C0016030
fibroblast
C0007634
cell