The mechanism and protective effects of Tartary buckwheat polysaccharides(TBP) on lead-poisoned mice were investigated. The mice were injected intraperitoneally with 7 mg/kg lead acetate solution daily, for 8 days to produce the lead-poisoning model. After the model was established, various doses of TBP were administered via gastric infusion by different groups of mice every day from the 12 th day on, as treatments for 20 consecutive days. Passive avoidance test and Morris water maze tests were used to test...