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Histopathological findings in pigeon’s duodenum experimentally infected with E. labbeana. a. Parasitophorous vacuole (PV) at 1st day PI (H&E stain, X1000). b Trophozoite (vertical arrow) in PV at 2nd day PI. c First-generation schizont (horizontal arrow) at day 2 PI (H&E stain, X1000)
