MKI67 and neoplasm: WP1066 treatment significantly reduced gastric epithelial cell proliferation (DMSO 62±7.7 vs. WP1066 41.6±6.5 Ki-67 stained cells/gland, p<0.05; Fig. 3E–G) demonstrating that WP1066 can inhibit tumour growth by inhibition of cell proliferation.