CD274 and neoplasm: A375-hPD-L1 tumor bearing mice, 1 h post-injection Kidneys: 33.66 ± 3.26 Liver: 1.11 ± 0.41 Remaining organs: <1.5%ID/g Tumor/blood: 5.48 ± 0.12 Tumor/muscle: 9.33 ± 0.822 h post-injection Tumor/blood: 7.07 ± 0.11 Tumor/muscle: 6.76 ± 0.41