The human blood fluke.

Discusses the epidemiology of schistosomiasis and describes the life-cycle of schistosoma mansoni, its laboratory culture and its chemotherapy in experimentally infected mice. The laboratory culture of the water snail vector Australorbis glabratus is also shown, together with the methods for extracting miracidia from infected faeces, infecting snails, and infecting laboratory mice with cercariae obtained from the snails. Animated diagrams are used to show how the schistosome eggs pass into the faeces; the stages of development within the snail vector; the cercariae penetrating the skin of the host, and their subsequent passage to the liver and circulatory system.