The results showed that UVC damages DNA in a complete way,while UVA and UVB damage DNA in a selective way,and the speed effect of UVB on DNA was faster than that of UVA.

• 结果表明,紫外C(UVC)对DNA产生了全面的损伤,而紫外B(UVB)和紫外A(UVA)对DNA的损伤则具有选择性,其中UVB比UVA的作用速度快。