这些黑斑在大量细胞由于反复压力或皮肤受到刺激产生色素时出现。
The spots arise when groups of cells begin producing pigment in response to repeated stress or irritation of the skin.
这些黑斑在大量细胞由于反复压力或皮肤受到刺激产生色素时出现。
We know that it occurs as a result of stress, and p53 is a classic 'stress' protein, going into action when cells experience stress-related DNA damage.
研究人员发现通过模仿这种酶的作用，可以更长时间地维持发囊里产生色素的干细胞的健康数量。
By mimicking the effect of this enzyme, researchers found it was possible to maintain a healthy population of pigment-producing stem cells in the hair follicle for longer.
研究人员发现通过模仿这种酶的作用，可以更长时间地维持发囊里产生色素的干细胞的健康数量。
By mimicking the effect of this enzyme, researchers found it was possible to maintain a healthy population of pigment-producing stem cells in the hair follicle for longer.
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