CHLOROMYCETIN, now also known as chloramphenicol, is an antibiotic which was first described by members of the research staff of Parke, Davis and Company, Detroit, Michigan, U.S.A. 1,2.

Two males and two females have been analyzed for levels of wild-type and chloramphenicol-resistant mitochondria. CAPr mtDNA was detectable in many tissues at levels as high as 6% of total mtDNA (Fig.