Fig. 6

Recruitment of immunocytes to target cells in the presence or absence of PD1-NP-PDL1. Live A PD-L1-positive MDA-MB-231 cells or B PD-L1-negative A549 cells were mixed with activated PBMC in presence of either NPs or PD1-NP-PDL1, and gently washed thrice by PBS. The remaining cells were observed by phase contrast microscope. The white arrows pointed to lymphocytes in the image. Scale bar represents 20 μm