title: Tibotec and Aspen collaborate on Prezista.
mesh_terms: D017954:Africa South of the Sahara; D003363:Cost Control; D000069454:Darunavir; D004345:Drug Industry; D004335:Drug and Narcotic Control; D017320:HIV Protease Inhibitors / Q000191:economics*; D006801:Humans; D007391:International Cooperation; D013019:South Africa; D013449:Sulfonamides / Q000191:economics*
chemical_list: D017320:HIV Protease Inhibitors; D013449:Sulfonamides; D000069454:Darunavir