Slide showing microscopic image of 'filaria bancrofti'. Slide shows black and white microscopic image of 'filaria bancrofti'. Filaria is a parasitic roundworm that lives in human beings and animals. It is chiefly found in Asia, Central Africa and the Southwest Pacific. Printed label above image reads, '54. Filaria bancrofti (blutfilarie des Menschen), Larve in Menschenblut. (Fall von lymphatischen Geschwulsten an Hoden und Samenstrang) Rio. 430:1'. Printed label below image reads, 'Dr W. Stempell, Greifswald, fot. (Nachbildung untersagt.) Herstellung u. Verrieb: Ed. Liesegang, Dusseldorf 1904.' Late 19th - early 20th century