Additional File 3.

Transverse scan of the patient's left knee. A large cystic onchocercoma can be seen. Movements of a conglomerate of coiled adult filariae are displayed in the cystic fluid of the nodule. Static fragments of the worms are visible in the lower left part of the video image. The corresponding image can be seen as figure 4A.

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Mand et al. Filaria Journal 2005 4:1   doi:10.1186/1475-2883-4-1