ERBB3 and neoplasm: For HER3, the effect was less impressive with the tumor-to-liver ratio increasing by ca. 4-fold from 0.6 for [68Ga]-(HE)3-ZHER3:08698 -NOTA (3 h pi) [31] to 2.3 for [57Co]Co-NOTA-ZHER3:08698 (24 h pi, co-injected with (ZHER3:08698)3 trimer) [41] in a BxPC-3 xenograft model.