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Overall view of the midgut gland/gonad complex stained with hematoxylin-eosin. (A) control periwinkle (male); (B) a periwinkle of the CdH group after 21 days of exposure (female). Scale bars: 200 µm; Abbreviations: DD: digestive tubular diverticula, CA: Connective Tissue Calcium cells, CT: connective tissue; GO: gonad tissue.
