[Histological and morphological studies on the rhizomes of Curcuma].

Objective: To provide some new evidences for the identification of medicinal materials of Curcuma.

Method: Microscopic observation was made to characterize the rhizomes of Curcuma.

Result And Conclusion: There were no obvious histological and morphological differences among the rhizomes of Curcuma.

[Studies on extraction process of Fructus Schisandrae chinensis and Fructus Ligustri lucidi in gandening tablet].

Objective: To optimize the combined extraction methods of Fructus Schisandrae Chinensis and Fructus Ligustri Lucidi.

Method: The extraction effects of three processes (SFE CO2, alcohol-extraction, water-extraction) were compared by the contents of deoxyschizandrin, the dried extraction yield and production feasibility.

Result: The method of alcohol-extraction was the best of the three methods, and the extraction conditions were optimized by orthogonal design as follows: sixfold 90% alcohol for two times and each for one hour.

[Mutual interaction between hepatitis B virus antigen and metallothionein].

Objective: To screen and identify the protein interacting with HBV antigen in hepatocytes. Then investigate the biological functions of hepatitis B virus antigen in the pathogenesis of hepatitis B and seek effective methods to prevent and treat it.

Methods: The yeast two-hybrid system-3 technique was used to construct HBV PreS2, HBeAg, HBcAg, HBxAg bait plasmids.