LGALS4 and neoplasm: At permissive temperature, esgTS > GFP, Notch-RNAi flies (esg-Gal4, tub-Gal80TS, UAS-Notch-RNAi, where esg refers to escargot and TS refers to thermosensitive, respectively) develop tumours derived from the GFP-marked PCs in the posterior midgut (Fig. 6a, c, e).