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Small intestine of dog naturally infected with Leishmania infantum. A) Observe positive immunolabeled amastigotes (black arrows) in the lamina propria of the duodenum of dog naturally infected with Leishmania infantum; scale bar: 16 μm Note positive immunolabeled amastigotes forms of Leishmania (black arrows) and nnon-specific labelling of a nucleus (yellow arrow) and unlabelled amastigotes (pink arrow). Immunohistochemistry Streptoavidin-biotin reaction method.
