(center map)
(1) CDC2@cell+cyclin B1*@cell -> CDC2:cyclin B1*@cell
(2) CDC2:cyclin B1*@cell - PKMYT1@cell -> CDC2_Thr14_pho:cyclin B1*@cell
(3) CDC2_Thr14_pho:cyclin B1*@cell - CDC25C@cell -> CDC2:cyclin B1*@cell
(4) CDC2:cyclin B1*@cell -t-> CDC2:cyclin B1*@nucleus
(5) CDC2_Tyr15_pho:cyclin B1*@cell - CDC25C@cell -> CDC2:cyclin B1*@cell
(6) CDC2:cyclin B1*@cell - PKMYT1@cell -> CDC2_Tyr15_pho:cyclin B1*@cell