CASP3 and neoplasm: Intravital microscopy in the liver of wild-type mice using the CellEvent caspase-3/7 cleavage reporter (Cas-Green) to monitor tumour cell apoptosis and death, documented the engulfment of live KPC tumour cells by KCs (Fig. 2f, Extended Data Fig. 4a and Supplementary Video 1); however the phagocytic process spanned several hours, which made quantification difficult.