Advances in studies on carrier preparations of Chinese Materia Medica Analysis on low transfer rate of active constituents by water extracting from Chinese materia medica Requirements of FDA for preclinical toxicological studies on preparation of phytomedicine in US Application of nanotechnique to modern preparation of Chinese materia medica Advances in modulation of cytochrome P-450 by Chinese herbal medicine Effects of different pulverization fineness on in vitro dissolution rate of Compound Biejia Ruangan Tablet based on biological value evaluation