| calcification of the bladder and papillary tumours of the bladder and ureters in gibbons (hylobates lar) infected with schistosoma haematobium (iran). | many species of nonhuman primates have been employed to find parasite-definitive host combinations which would allow for investigations on different aspects of schistosomiasis haematobia. gibbons (hylobates lar), exposed to moderate numbers of schistosoma haematobium cercariae, have demonstrated some of the basic features of schistosomiasis haematobia in man. calcification in schistosomiasis haematobia is variable. radiologically evident calcification of the bladder was noted in one gibbon. radi ... | 1975 | 820019 |