dW/d logM Differential M.W.Distribution 20 Rice Mw106 M401 72 15 M202 61 Koshihikari 84 10 Calmochi 174 5 01.0e+7 1.0e+8 1.0e+9 M(g/mol)1.0e+7 1.0e+8 1.0e+9 M (g/mol) 0 5 10 15 20 dW/d logM Differential M.W. Distribution Rice Mw 106 M401 72 M202 61 Koshihikari 84 Calmochi 174