参考文献:Bedner E, Du L, Traganos F, Darzynkiewicz Z. Caffeine dissociates complexes between DNA and intercalating dyes: application for bleaching fluorochrome-stained cells for their subsequent restaining and analysis by laser scanning cytometry. Cytometry. 2001 Jan 1;43(1):38-45. (https://www.ncbi.nlm.nih.gov/pubmed/11122483)