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Kala-azar, or visceral leishmaniasis, in India is generally assumed to be a result of infection with Leishmania donovani. 15 parasite isolates collected over the past 10 years from patients with classical disease were typed by monoclonal antibodies, isoenzymes, and kDNA analysis. 4 were shown to be L tropica, a species historically associated with cutaneous disease and more recently a mild 'visceralising'...
Infective larvae of a pathogenic nematode of humans, Strongyloides stercoralis, release a potent zinc endopeptidase activity which has a broad substrate specificity for constituents of extracellular dermal matrix, including elastin. Specific inhibitors of zinc endopeptidases prevent the penetration of mammalian skin by S. stercoralis larvae. We now report the molecular size and isoelectric point of...
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