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[Brugia malayi] [Brugia timori] [Loa loa] [Mansonella ozzardi] [Mansonella perstans] [Mansonella streptocerca] [Onchocerca volvulus] [Wuchereria bancrofti]

Microfilaria of Brugia malayi, collected by the Knott (centrifugation) concentration technique, in 2% formalin wet preparation.  Note the erythrocyte ghosts (for size comparison) and the clearly visible sheath that extends beyond the anterior and posterior ends of the microfilaria.  There are four sheathed species: Wuchereria bancrofti, Brugia malayi, Brugia timori, and Loa loa.