Comparisons of pharmacokinetic profile of eleven bioactive components in Haizao Yuhu decoction modified with Haizao and Gancao anti-drug pair in normal rats Optimization of ethanol extraction process of Psoraleae Fructus-Myristicae Semen drug pair by orthogonal test combined with fingerprint HPLC specific chromatograms of drug pair of Schizonepetae Herba and Saposhnikoviae Radix Enriching blood effect comparison in three kinds of blood deficiency model after oral administration of drug pair of Angelicae Sinensis Radix and Chuanxiong Rhizoma and each single herb Effects of compatible herbs and pH value conditions on change rule of anthraquinones in Rhei Radix et Rhizoma