Four ounces of chicken contain twenty-eight grams of protein, which is almost half the recommended dailydietaryallowance.
4盎司的鸡肉含有28克的蛋白质，那几乎是推荐人体每日摄入量的一半了。
2
The Recommended DailyAllowance is 5 micrograms and good dietary sources are dairy produce (not low fat), oily fish, cod liver oil, egg yolk, fortified margarines.
The Recommended DailyAllowance is 1-2 micrograms and good dietary sources are meat (particularly liver), fish, eggs, dairy produce, fortified cereals and brewer's yeast.