A possible mechanism of low level laser-living cell interaction

K. Lubart, S. Rochkind, T. Fisher, Z. Malik

Research output: Contribution to journalArticlepeer-review


A qualitative E.P.R. (Electron Paramagnetic Resonance) study has been performed to determine the action of Low Level Lasers on living cells. Single I oxygen (1O2) was found to be generated by Friend Erythroleukaemic Cells (FELC) idler irradiating them with a HeNe laser. The production of 1O2 in the cell during irradiation was proved by an C.P R technique. No singlet oxygen is phoioproduccd by irradiating cither cytochrome C or hemin. Singlet oxygen, in small amounts, is very significant in biochemical processes nnd hence can be important in biostimulation. It is proposed that singlet oxygen is pholoproduced by the natural porphyrins in the cell.

Original languageEnglish
Pages (from-to)65-68
Number of pages4
JournalLaser Therapy
Issue number2
StatePublished - 1990
Externally publishedYes


  • E.P.R FELC
  • LLLT (Low Level Laser Therapy)
  • Porphyrins
  • Singlet oxygen


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