Receptor-mediated endocytosis of human transferrin and its cell surface receptor.


We have studied the process of transferrin endocytosis in human erythromyeloid cell line K562 using fluorescein (FL) and rhodamine (RD) labeled iron-saturated transferrin (FeTF), and a fluorescein labeled monoclonal antibody to the transferrin receptor (FL-mAB). Because the antireceptor antibody and FeTF bind to different sites on the TF receptor molecule… (More)


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