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Influence of chloramphenicol on AR9 infection. Extension of primers for AR9 early genes g087 and g104 and late genes g153 and g077 and the B. subtilis rpoB gene on total RNA purified from control cells and from cells treated with 30 μg/ml chloramphenicol (Cm) added 5 min prior to infection. Times of infection (minutes) are indicated at the top.
