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. 2011 Mar 24;6(3):e14767. doi: 10.1371/journal.pone.0014767

Figure 2. Growth of plaque radius in time and the determination of plaque velocity.

Figure 2

Plaque radius as a function of time for the WT (filled circles) and H275Y mutant (open circles) A/Brisbane/59/2007 (H1N1) pair. Points indicate the average plaque radius over all plaques at a given time with SEM errorbars. Linear fits to the first three time points are shown for the WT (solid line) and H275Y (dashed line). The unit of length used here, Inline graphic, is the average diameter of an ST6GalI-MDCK cell (see Materials and Methods).