a, b, EM of wild type (genotype: OreR) midguts with or without PFA feeding for 4d, along with magnified views of highlighted regions in (a’, b’) and PXo body size quantification in (c). N=17 PXo bodies were analyzed per group. P=1.28E-5. d, e, EM of midguts with or without ubiquitous MFS10 RNAi expression for 5d, along with a magnified view of highlighted regions in (d’, e’) and PXo body size quantification in (f). N=91 (Ctrlv), 89 (MFS10-iv). P=1.38E-8. g, h, EM of midguts with or without ubiquitous PXo RNAi (NIG line) expression for 5d, along with magnified views of highlighted regions in (g’, h’) and PXo body size quantification in (i). N=40 PXo bodies per group. P=1.30E-9. Data are mean ± SEM. P values are from two-tailed Mann-Whitney u test (c, f, i). Scale bars, 4 μm (a, b, d, e, g, h), 1 μm (a’, b’, d’, e’, g’, h’).