MKI67 and neoplasm: Initial examination of the Ki-67-stained tumor tissues showed a significant decrease in Ki-67 expression for the 37 MBq [177Lu]Lu-IBA-DOTA-(PEG28)2-A20FMDV2 treated group (34.51 ± 5.24%) when compared to the control group (51.39 ± 5.56%) (p = 0.0044).