The yolk contains all the fat and approximately half of the protein of the egg.

蛋黄含有鸡蛋中全部的脂肪和大约一半的蛋白质。

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Most of the protein is contained in the egg white, while vitamins, minerals, fats, carotenoids and cholesterol are contained in the yolk.

大部分蛋白质存在于蛋清中，而维生素、矿物质、脂肪、类胡萝卜素和胆固醇则存在于蛋黄中。

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Before egg fertilization, the gene produces a protein, found in the cytoplasm of the egg, that controls the pattern of cell division and thus handedness.

卵子受精之前，这种基因会产生一种蛋白质，这种蛋白质存在于卵子的细胞质中，它控制着细胞分裂的模式，从而控制着旋向性。

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Make sure to eat plenty of high-quality, lean protein like fat-free dairy, egg whites, fish and skinless chicken (protein should make up about 20 percent of your total calories) and limit vitamin A fortified foods or multivitamins with high doses of vitamin A, which can negatively impact bone health.

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It is important to take in adequate amounts of lean protein such as chicken, fish, lean red meat, egg whites, low-fat cottage cheese or a protein supplement.

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