Methods: The photodynamic cytotoxicity of human ovarian cancer cell 3AO in different laser wavelength, energy and chlorophyll derivative (CPD4) concentration were studied by MTT colormetric assay.

• 方法:应用MTT比色分析法分析不同的激光波长、能量和叶绿素衍生物（CPD4）浓度对人卵巢癌3AO细胞的光动力杀伤效应。