CCKBR and neoplasm: A comparable uptake in A431-CCK2R xenografts was observed, with values of 22.9 ± 4.7%IA/g found for [177Lu]Lu-DOTA-MGS5 (tumour weight: 436 ± 200 mg; n = 5) prepared by manual labelling and values of 31.9 ± 12.8%IA/g for [177Lu]Lu-DOTA-MGS5 (tumour weight: 185 ± 103 mg; n = 3) prepared using the automated synthesis process, at 4 h after injection.