Image Library [Last Modified: ]
Filariasis
[Brugia malayi] [Brugia timori] [Dirofilaria spp.] [Loa loa] [Mansonella ozzardi] [Mansonella perstans]
[Mansonella streptocerca] [Onchocerca volvulus] [Wuchereria bancrofti]

The microfilaria of Wuchereria bancrofti are sheathed and measure 240-300 Ám in stained blood smears and 275-320 Ám in 2% formalin.  They have a gently curved body, and a tail that is tapered to a point.  The nuclear column (the cells that constitute the body of the microfilaria) is loosely packed; the cells can be visualized individually and do not extend to the tip of the tail.  Microfilariae circulate in the blood.

W. bancrofti W. bancrofti
A B

A, B:  Microfilariae of W. bancrofti in thick blood smears stained with Giemsa.  Images courtesy of the Oregon State Public Health Laboratory.

W. bancrofti W. bancrofti, anterior
C D

C: Microfilaria of W. bancrofti in a thick blood smear, stained with Giemsa.
D: Close-up of the anterior end of the worm in Figure C.

W. bancrofti, posterior
E

E: Close-up of the posterior end of the worm in Figure C.

 

Back Top
 Page 1 of 25  Next Page