Of the LG xenografts, 79% and 78% displayed positive staining for VIL1 and KRT20, respectively, compared to 12% and 33% of HG tumours (P < 0.001 and P < 0.0001, for VIL1 and KRT20 respectively, Fisher’s exact test) (Table S1, Fig. 4A, B). Here, KRT20 is linked to neoplasm.