MB and neoplasm: In a time-optimization biodistribution in mice carrying subcutaneous tumours of PDAC299, a maximum relative tumour uptake of 7.3 ± 1.02 %IA/g and a tumour-to-blood ratio of 8.3 ± 0.82 were observed at 24 h post injection of 0.3 nmol 111In-labelled DTPA-700DX-MB (Figure 2B,C and Supplementary Table S1).