13C fluxes in legume seeds. Network of central metabolism with 13C measurements from seeds of Medicago truncatula (left, lipid producing seed) and Pisum sativum (right, starch producing seed). Red graduation indicates the measurement confidence (red = low, black = high) and reaction nodes obtained a rounded appearance. Yellow nodes indicate the main seed products starch and lipids.
Rohn et al. BMC Systems Biology 2012 6:33 doi:10.1186/1752-0509-6-33