Adult midgut of <i>βint-ν</i> mutants showed shortened and multilayered epithelium.

<p>(A) The whole adult midgut of wild-type flies and <i>βint-ν²</i> 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 <i>βint-ν²</i> 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 <i>βint-ν²</i> adult midgut length relative to that of wild-type flies. (D) A cross-section view of the adult midgut of wild-type, <i>βint-ν²</i>, and control (<i>Act5C>GFP</i>) flies, and a knockdown of <i>βint-ν</i> (<i>Act5C>βint-ν RNAi</i>) flies, stained with Rhodamine-phalloidin (magenta) and DAPI (white).