Optimal number of spacers in CRISPR arrays
Fig 8
Survival probability vs diversity of the virus pool.
Plots of the optimized over δ and S cell survival probability and the number of spacers vs the number of viral species and the composition of a two-virus pool for β = 1, χ = 1.4, μ = 0.9 and rNt = 5. (A) Maximal survival probability E(t) (outer plot) and optimal number of spacers Sopt (inner plot) as a function of the number of virus species n. The abundance of virions belonging to different species in the viral pool are the same for all species, ν1 = … = νn = 1/n. (B) The maximal survival probability vs the relative abundance of one of the viruses in a two-virus pool.