TNFRSF1B and neoplasm: Although endothelial cells have been reported to express TNFR2, we examined the amount of ADR in tumor-infiltrating endothelial cells, and the results showed that the proportion of TNFR2 antibody-modified nanoparticles taken up by endothelial cells was not significantly different from that of the free ADR group and ISO-PLGA-ADR nanoparticle groups.