Methods Based on the routine manual cleaning and sterilization,a micro pump and a sprayer were used to replace the routine injector of 50 ml to douche the gastroscopes for the purpose of preventing cross infection of HBV.

The effect of water resource on medical cross infection during dental treatment;

Hepatic pathology and clinical characteristics of 71 cases of chronic hepatitis B virus infection with normal serum ALT;

The Study on Genotype and Serum Level of IL-18 of Chronic Hepatitis B Virus Infection;

Methods In the treatment group, a total of 125 patients with chronic HBV infection were treated with anti-HBV active immunotherapy, deltoideus intramuscular injection with 20 ?滋g of HBV vaccine, 200 000 U of recombinant human interleukin-2 for injection and 75 ?滋g of sargramostiom, respectively, once a month for 12 months.

The understanding on the mechanism of chronic HBV infection is the foundation for developing a novel effective treatment.

Objective To study the mechanism of chronic persistent HBV infection transmited by consanguinity,this article preliminarily researched the relevance of HBV pre-s1 antigen and chronic HBV infection transmited by consanguinity.