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. 2022 Nov 17;12(22):3185. doi: 10.3390/ani12223185

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Photomicrograph showing histopathological characteristics of cecal tissues. (A) Negative control group of non-infected birds showing normal tissue appearance. (B–D) Birds infected with non-treated oocysts. (B) Significant epithelial shedding (notched arrow) and diffuse mucosal bleeding (h). (C) Diffuse mucosal hemorrhages (h), eosinophils (e), and mononuclear cell infiltration (star). (D) Various coccidial stages in the villar epithelium and lamina propria (arrow), H&E stain, scale bar = 20 µm.