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Histopathological analysis of chicken ceca (n = 3). (A) Uninfected–untreated group. (B) Infected–untreated group (black solid arrow represents coccidia oocysts). (C) MAD premix group(black solid arrow represents structural disorders). (D) Low-dose group of MAD–NLCs (black solid arrow represents coccidia oocysts). (E) Medium-dose group of MAD–NLCs. (F) High-dose group of MAD–NLC structural disorders.
