WRR-286; WRR-483; Trypanosomal cysteinyl protease inhibitors, University of California/Scripps; Cruzain inhibitors (Chagas disease), UCSF/Scripps; Rhodesain inhibitors (sleeping sickness), UCSF/Scripps; Parasitic cysteine protease inhibitors (trypanosomal diseases), Scripps/University of California, San Fransisco; Cysteine protease inhibitors (Chagas' disease/malaria/ African sleeping sickness), UCSF/Scripps