Physical examination showed xerosis and pigmentation on his low extremities, and the skin touched hard.
皮肤科检查示双下肢皮肤干燥、僵硬伴明显色素沉着.
Vitamin C only on melanoma cells by tyrosinase are stagnant, only over-pigmentation has improved.
维生素C仅仅对黑素细胞内的酪氨酸酶有迟滞作用, 只对过度的色素沉着有所改善.
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