 free fatti acid concentr matern plasma fetal bodi fat content subcutan inject 200 unit heparin femal spragu-dawlei rat produc larg sustain elev plasma free fatti acid chang blood glucos group pregnant rat receiv inject heparin 3 time daili pregnanc fetus mother group 191 2 211 2 dai gestat bodi fat fetus uninject mother hypothesi present matern free fatti acid concentr determin fetal fat accumul propos bodi composit chang babi mother diabet ascrib abnorm high matern plasma free fatti acid concentr 