Figure 1: Wuchereria bancrofti microfilaria in the Sudan black B (A) and dual esterase (naphthol AS-D chloroacetate esterase) (B) smears (1000x). The inset in (B) shows the larvae at low power (100x). Species identification was possible due to the sheathed larvae showing the presence of multiple columns of small sized nuclei and a tail tip free of nuclei.