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ventral surface of a giardia muris trophozoite that had settled atop the mucosal surface of a rats intestine

depicted the dorsal upper surface of a giardia protozoan that had been isolated from a rats intestine

giardia muris trophozoite that had settled atop the mucosal surface of a rats intestine

surface of a giardia protozoan that had been isolated from a rats intestin

man setting traps for rats during a plague study

rattus norvegicus rats animals

rats with differing colorations are due to selective breeding
