\begin{equation} \frac{d[M_R]}{dt} = k_{sMR} - \lambda_{MR}[M_R] \end{equation} \begin{equation} \frac{d[R]}{dt} = k_{sR}[M_R] - 2k_{2R}[R]^2 + 2k_{-2R}[R_2] - \lambda_R[R] \end{equation}
