The eggs of the parasite Schistosoma mansoni may lodge in a variety of organs including the gut wall, liver, lung and even central nervous system, inducing the formation of granulomas under the control of IL-13.
Theodor Bilharz was a German scientist who discovered, in autopsy material at Kasr El Aini Hospital, the causative agent of haematuria : Schistosoma worm, during his work in Egypt in 1851.