[A nested case control study for risk factors impacting hepatitis B vaccination in Hebei, China].

Objective: Study the risk factors that impact the effectiveness of mass hepatitis B vaccination, and try to amend them in the future.

Method: Based on the national surveillance of hepatitis B, all the 1734 of 1-15 years old children from Hebei Province were enrolled in the present study and they were divided into case and control group according to their sera HBsAg were positive or not.

Results: Mother sera HBsAg positive and the hospital the children were born and earlier year of birth were risk factors.

[Specific anti-tumor effect of immune competent cell induced by HSP-70 of HeLa cells in vitro].

Background & Objective: Recent studies indicated that heat shock proteins (HSPs) are associated with antigenic peptides and participate in the antitumor T cell response in animals. This study was designed to investigate the mechanism of anti-tumor effect of immune competent cells (ICC) induced by HSP-70 of HeLa (cervical carcinoma) cells in vitro.

Methods: The normal peripheral blood mononuclear cells(PBMCs) stimulated with HSP-70 of HeLa cells in vitro.