Fig. 5.
Effect of anti-TfR MoAb 42/6 on 59FeTf and59Fe-PIH uptake. Cells were plated in serum-free medium containing either 59Fe-Tf (109 pmole Fe/mL) or59Fe-PIH (245 pmole Fe/mL) with (+) or without (−) 10 μg/mL 42/6. 59Fe uptake by cells was determined after a 24-hour incubation. (A) 59Fe-Tf uptake; (B)59Fe-PIH uptake. Values represent means ± SE (n = 3).