ret.addReactant(cell, POL, 1, 1);
ret.addReactant(cell, rTEMPLATE, 1, 1);
ret.addReactant(cell, N, 1258, 1);
// ---> POL + TEMPLATE + NmRNA
ret.addProduct(cell, POL, 1, tPOLt);
ret.addProduct(cell, rTEMPLATE, 1, polDelay);
ret.addProduct(cell, TEMPLATE, 1, tPOLt);
// K
ret.setk(kReplication);