HT1080 cellular uptake of 57Co-Cbl in the presence of various concentrations of HS or FCS.

HT1080 cells were incubated at 37°C with 57Co-Cbl in DMEM containing either HS or the given HS / FCS mixture. AD, In all experiments, the cells were harvested for 57Co analysis after 48 h. Data are mean values + SE (n = 3).