The effects of carotenoids extracts from Potamogoton crispus L. （CEPC） on proliferation and apoptosis of Hela cells were studied. This paper adopted visible light, fluorescence, electron microscopy and Laser Scanning Confocal Microscope （LSCM） to observe the cellular morphology of Hela cells under the effecfs of CEPC. After cells were treated with 2.5, 5, 10μg/ml CEPC, respectively, many typical apoptotic morphological features were observed by these apparatus, such as： the number of cells decreased, the cells shrunk, the cells distorted,...
