Objective To evaluate the protective effect of 6 kinds of cordyceps polysaccharides on immunological liver injury in mice. Methods An immunological liver injury model was induced by administration of lipopolysaccharide following injection of BCG vaccine into mice, while 6 polysaccharides from different origins of cordyceps was given at ig 150 mg·d -1 for 12 days. The activities of serum transaminase (ALT, AST) and liver SOD, the concentration of liver MDA, the weighting indexes of liver and spleen, t...