Fig. 1From: Urinary balantidiasis in a patient with systemic lupus erythematosus and lupus nephritis: a case reportDetection of B. coli trophozoites in urine samples of our patient with systemic lupus erythematosus. a Several trophozoites (arrows) of different sizes in one low-power field (× 100 magnification). b A single trophozoite and c ciliated (arrow) trophozoite with a micrometer scale, measuring 30 × 37.5 μm (× 400 magnification). d Wright-Giemsa staining of trophozoite showing cytostome (arrow) and several contractile vacuolesBack to article page