| UPS | ultraviolet photoelectron spectroscopy; uninterruptible power supply; uroporphyrinogen synthetase; u... |
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| UV | ultraviolet; umbilical vein; ureterovesical; Uppsala virus; urinary volume |
| UVB | ultraviolet B |
| UVER | ultraviolet-enhanced reactivation |
| UVI | ultraviolet irradiation |
| ultraviolet therapy | The use of ultraviolet electromagnetic radiation in the treatment of disease, usually of the skin. This is the part of the sun's spectrum that causes sunburn and tanning. Ultraviolet a, used in puva, is closer to visible light and less damaging than ultraviolet b, which is ionizing. (12 Dec 1998) |
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