| Plaque Notes | The mean diameter of the plaques formed by this phage is ~2.6mm. Most of them have a smaller circle with a diameter of ~1.0mm in the center which is completely clear. Outside of this, there is a band of cloudy material, which starts near its inside border as being just as defined as the bacterial lawn on the rest of the plate outside the plaque, but which becomes almost completely clear towards the outside of the plaque. Here, a cleared ring is formed, sometimes directionally, with respect to the plaque as a whole. Additionally, there appears to be a lighter "halo" under the surface of the bacterial lawn/top agar for some of the plaques, which extends out ~2.0mm from each plaque. This could be caused by the infiltration of air under the surface of the top agar where the clearings had exposed this area to the air. |