Objective Compared the change of blood se level in the elderly people before and after taking food enriched-selenium, and provided references of meal nutrition for the elderly people.
目的对比食用富硒食品前后老年人血硒水平的变化，为老年人硒膳食营养提供参考。
Objective Compared the change of blood se level in the elderly people before and after taking food enriched-selenium, and provided references of meal nutrition for the elderly people.
目的对比食用富硒食品前后老年人血硒水平的变化，为老年人硒膳食营养提供参考。
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