Giardia lamblia

Giardia lamblia. Trophozoite in fecal smear (trichrome stain, oil immersion). This trophozoite exhibits the characteristic pyriform shape and contains two anteriorly placed nuclei, one on either side of the longitudinally oriented axonemes. The slightly curved, transverse median bodies lie slightly below the nuclei. Because they stain poorly, flagella are rarely seen in such stained specimens.