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  Indian J Med Microbiol
 

Figure 2: (left) Flagellate protozoan parasite in fresh sputum sample. Note the pyriform shape, granular cytoplasm with a large vacuole and the tuft of flagella at the apical end (arrow). (Wet mount × 1200; bar, 15 μm). (Right) Similar flagellate protozoon in a sputum smear (Wheatley's trichrome srtain × 1000; bar, 15 μm). (Reproduced from Martinez-Giron and van Woerden)[3]

Figure 2: (left) Flagellate protozoan parasite in fresh sputum sample. Note the pyriform shape, granular cytoplasm with a large vacuole and the tuft of flagella at the apical end (arrow). (Wet mount × 1200; bar, 15 μm). (Right) Similar flagellate protozoon in a sputum smear (Wheatley's trichrome srtain × 1000; bar, 15 μm). (Reproduced from Martinez-Giron and van Woerden)<sup>[3]</sup>