ODE model simulations with a time-dependent source S10(t) = m0λ exp(−λt) with m0 = 4 and λ = 16, and (abc) kb = 32, (def) kb = 1, (ghi) kb = 1/8. (Left) Plots of Rs(t), Bs(t), c10(t), and θs(t) until t = tgel. (Middle) Rates of link and branching formation reactions involving different numbers of monomers. (Right) Average functionality f(t) = Rs(t)/M00(t) vs. cumulative monomer sourced θs(t). Dashed black lines indicate when 99% of the monomer has been sourced.