Notably, 65 kDa RABiT is anticipatedto have an 8 nm hydrodynamic diameter compared to 10–15 nmfor ∼150 kDa antibody-drug-conjugates and 80–120 nmfor clinical PEGylated liposomes and, therefore, may penetrate tumortissue more uniformly.55 Albumin accumulatesvia oncogene-driven macropinocytosis in multiple cancer types,39,56 and our experiments in mice indicated its tumor uptake can approachlevels achievable with some molecularly targeted methods. This evidence concerns the gene ALB and cancer.