Fig. 3From: Double attack strategy for leukemia using a pre-targeting bispecific antibody (CD20 Ab-mPEG scFv) and actively attracting PEGylated liposomal doxorubicin to enhance anti-tumor activityThe internalization and PEGylated liposome DiD uptake of CD20 Ab-mPEG scFv in Raji cells. a The internalization of CD20 Ab-mPEG scFv combined with Lipo-DiD into Raji cells at different times. The presence of Lipo-DiD on the surface of Raji cells was measured via flow cytometry using a mouse anti-PEG backbone antibody. b Quantification of the mean fluorescence of DiD on the surface of Raji cells (red) and DiD uptake efficiency (blue)Back to article page