Phototherapy, a new method of treatment on chloasma, with the merit of high efficiency and being less damage to the surrounding tissues, has been applied in clinical treatment gradually.

光学治疗黄褐斑是黄褐斑治疗一种新的手段，以其效率高，对周围组织损伤小的优点，已逐步应用于临床治疗。

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Soft tissues are seen with the same machine as for hard tissues, but a "softer" or less-penetrating X-ray beam is used.

软组织与硬组织的同一台机器，但用于“软”或更少穿透X射线束。

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It could actually be useful where we see less of it, as in tissues with very few stem cells.

这对组织中很少的干细胞进行研究是非常有实用价值的。

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Simply put, as the cell line ages it loses its capability to differentiate itself into various tissues and thus is less useful.

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"Less than 1% develop a serious neurologic illness such as encephalitis or meningitis (inflammation of the brain or surrounding tissues), " it said.

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"Less than 1% develop a serious neurologic illness such as encephalitis or meningitis (inflammation of the brain or surrounding tissues), " the CDC said.

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