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SEM of trophozoites of the G. lamblia strain C4 (A, C, E) and corresponding wild-type strain WBC6 (B, D E). Low magnification views in A and B, ventral side in C and D, dorsal side in E and F. ds = dorsal surface, vd = ventral disc. Bars in A and B = 9.3 μm; bars in C - F = 2.8 μm.
