Before revision:  Recently, a method was proposed for calculating rigorous bounds on quantities of interest for stochastic chemical kinetic systems at steady state. In particular, the method used semidefinite programming to calculate bounds on mean molecular counts, variances in these counts, and probability histograms .
After revision:  Recently, a method was proposed for calculating rigorous bounds on quantities of interest for stochastic chemical kinetic system's stationary distribution(s) -- for example, mean molecular counts, variances in these counts, and probability histograms .