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Table 2 Comparison of phage phi PVP-SE1 plaque diameter with DLA and with PAMA using different antibiotics.

From: The use of antibiotics to improve phage detection and enumeration by the double-layer agar technique

  DLA AMP [0.5] CEF [0.06] TET [1.5]
PLAQUE DIAMETER (mm) 0.47 ± 0.167 1.49 ± 0.433 1.91 ± 0.439 3.43 ± 0.398
AREA INCREASE 1 10 17 53
  1. Values of plaque diameters are expressed in mm±standard deviation and area increase as the ratio between the average values of each method and DLA. DLA: classical Double-Layer Agar technique; AMP [0.5]: PAMA with 0.5 mg/l ampicillin; CEF [0.06]: PAMA with 0.06 mg/l cefotaxime; TET [1.5]: PAMA with 1.5 mg/l tetracycline.