Fig. 3

The 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)