Figure 4From: The use of antibiotics to improve phage detection and enumeration by the double-layer agar techniqueInfluence of 5% glycerol in the top layer on phi PVP-SE1 phage plaques. A – classical DLA; B – PAMA with 0.2 mg/l cefotaxime; C – as in A but with 5% glycerol; D – as in B but with 5% glycerol.Back to article page