Figure 4.

Spacers acquired during coexistence of S. thermophilus and phage 2972. (a) Number of acquired spacers per clone at each day post-infection (dpi). Means and 95% CIs are shown (n = 8). (b) Mean relative frequency of clones with different numbers of acquired spacers at each dpi. No clone with greater than three spacers was detected. Means and 95% CIs are shown (n = 8). (c) Spacer diversity in each replicate, measured as the pairwise differences among spacer sequences in each replicate (x-axis) at each time point (colours).