Effects of Baixiangdan capsule on location and expression levelsof GABAA receptor β2 subunit in hippocampus of PMS model rats with liver-qi invasion Effects of oxysophoridine on Glu and GABA immuno-reaction positive neurons in cortex and hippocampus of rats ADVANCES IN FUNCTIONAL RICE ENRICHED WITH GAMMA AMINOBUTYRIC ACID FOR DECREASING BLOOD PRESSURE