the comparative in vitro activity of erythromycin , roxithromycin and doxycycline against 20 isolates of m. avium and 20 m. xenopi was evaluated by two technics : a standard macrobroth dilution ( 7h9 ) and the 1 % standard proportion method on lowenstein medium .
C0014806
erythromycin
C0035891
roxithromycin