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Fig. 5. 125I-transferrin uptake in AP-2-depleted HeLa cells. Cells were transfected with empty pSuper vector (Control) or pSuper/µ2-1 construct, and cultured for 6 days. Then, the cells were assayed for uptake of 125I-labeled transferrin at 37°C for 15 minutes as described in the Materials and Methods, and the incorporated radioactivity was quantified using a
-counter. Results are the means ± s.d. of quadruplicate samples from one of two experiments.