Effect of PIPL-C treatment on CD24 or P-selectin–IgG staining. CD24-transfected adenocarcinoma cells (A125-CD24), KS cells, or SW2 cells were stained before (a) or after PIPL-C treatment (b) with MoAb ML-5 to CD24, human P-selectin–IgG, or MoAb W6/32 to MHC class I for control. The arrowheads indicate the negative control using the secondary antibody only.