Anaerobes and exposure to oxygen.
D001421:Bacteria, Anaerobic / Q000187:drug effects / Q000254:growth & development* / Q000302:isolation & purification; D001431:Bacteriological Techniques; D003470:Culture Media; D004260:DNA Repair; D005609:Free Radicals; D010100:Oxygen / Q000378:metabolism / Q000494:pharmacology*
D003470:Culture Media; D005609:Free Radicals; D010100:Oxygen