TLC analysis of macrolides produced by different S. venezuelae strains. A. Lane 1: KdesVIII, lane 2: desVII/KdesVIII, lane 3: desVIII/KdesVIII, lane 4: wild type. B. Lane 1: KdesVIII, lane 2: eryCII/KdesVIII, lane 3: tylM3/KdesVIII, lane4: dnrQ/KdesVIII, lane 5: wild type.