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作者用动物实验观察了维生素A的抗感染作用。方法:全部实验均用小白鼠进行。治疗组每日注射维生素A3,000国际单位,共4天;对照组注
The author used animal experiments observed the anti-infective effect of vitamin A. Methods: All experiments were performed with mice. Treatment group daily injection of vitamin A3,000 international units, a total of 4 days; control group Note