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The paper discusses the experimental teaching reform of biochemistry by referring to the characteristics of biochemical development and special feature.The reform increases effectually the interests of medical students,and may contribute to their creative competence and the abilities of scientific research.
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Purpose The aim is to study the effects of solubl e chit osan on antitumor factors and NK cell activity in rats.Methods The level of NO、TNF produced by peritoneal macrophages,IFN-γ production and NK ce ll activity of spleen was detected,after different concentrations of chitosan we re injected into the sarcoma 180 rats peritoneally.Results Th e cont ents of NO、TNF、IFN-γ and NK cell activity in sacroma 180 rats were significa ntly higher in the chitosan groups than those in the control group (P＜0.01) .Conclusion Chitosan could impove the immune function in rats .