Laser-induced multiphoton processes in living cells.
It is shown that specific light-induced subcellular alterations, usually referred to as phase "paling," result from multiphoton absorption processes. For green light (532 nm), four photons are required to induce paling in chromosomes and nucleoli; a two-photon process is observed for UV light (266 nm).
D000818:Animals; D002460:Cell Line; D002466:Cell Nucleolus / Q000187:drug effects / Q000502:physiology; D002875:Chromosomes / Q000502:physiology / Q000528:radiation effects; D004173:Dipodomys; D007668:Kidney / Q000502:physiology*; D007834:Lasers