Figure 2. Adult midgut of βint-ν mutants showed shortened and multilayered epithelium.

(A) The whole adult midgut of wild-type flies and βint-ν² homozygotes, stained with DAPI, at 7 and 28 days old. Broken lines were used to measure the midgut lengths. (B) The average of adult midgut length of wild-type flies and βint-ν² homozygotes. The error bars are standard error of means (S.E.M.). P-values were calculated by Student's t test, *p<0.05. (C) The βint-ν² adult midgut length relative to that of wild-type flies. (D) A cross-section view of the adult midgut of wild-type, βint-ν², and control (Act5C>GFP) flies, and a knockdown of βint-ν (Act5C>βint-ν RNAi) flies, stained with Rhodamine-phalloidin (magenta) and DAPI (white).