Changes in activities of respiratory enzymes in lungs of guinea-pigs exposed to silica dust Author: Kilroe-Smith TA, Breyer MG. Source: Br J Indust Med. 1963; 20:243-247. Babalwa Jekwa2019-04-12T17:43:33+02:00Dec 31st, 1963| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail