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Microscopic observation of phage phi PVP-SE1 host (S1400/94). A – LB only; B – LB with 0.5 mg/l ampicillin; C – LB with 0.06 mg/l cefotaxime; D – LB with 1.5 mg/l tetracycline; E – LB and 5% glycerol; F – LB with 0.5 mg/l ampicillin and 5% lglycerol; G – LB with 0.06 mg/l cefotaxime and 5% l glycerol; H – LB with 1.5 mg/l tetracycline and 5% glycerol.
