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Level of differentiation between hosts. The level of differentiation between pairs of hosts, FST, as a function of their topological distance (which is estimated as the minimum number of links which separates two distinct demes). A scale-free network, with γ = 3, is considered with D = 500, Nd = 10, μ = 0.0008, e = 0.01. R0 = 3 in filled circle symbols, R0 = 30 in empty circle symbols and R0 = 60 in diamonds.
