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Longitudinal section of midgut of Cx. pipiens larvae (40×). (A) The midgut epithelial cells of a control larva. (B) A larva under treatment with C. copticum extract showing the effect after 24 h of exposure. Midgut epithelium with cell vacuolization and apical protrusion (arrow), extract, degraded microvilli (DMV) degenerating epithelial cells (DEC), degenerating peritrophic membrane (PM) and degenerating nuclei (DN).
