Objective To observe the effects of oat β -glucan on glycemia in diabetic rats induced by STZ and investigate its mechanism.Methods 1 To confirm the adequate dosage of STZ, we compared the model rate and livability of two different doses of STZ, 55mg/kg and 65mg/kg. 2 We observed the glycemic responses of oat β -glucan in diabetic rats. Twelve SD male rats were selected randomly for normal group by their weight and other 68 SD male rats were injected peritoneal with 55mg/kg STZ, and 59 became diabetic rats....