Evolution has permitted a wide range of medium for communication between two living organism varying from information transfer via chemical, direct contact or through specialized receptors. Past decades have evidenced the existence of cell-to-cell communication in living system. Several studies have demonstrated the existence of one cell system influencing the other cells by means of electromagnetic radiations investigated by the stimulation of cell division, neutrophils activation, respiratory burst induction and alteration in the developmental stages, etc. The responses were evaluated by methods such as chemiluminescence, ultra-weak photon emission, generation of free oxygen radicals, and level of thiobarbituric acid-reactive substances (TBARS). The cellular communication is hypothesized to occur via several physical phenomenon's, however the current review attempts to provide thorough information and a detailed overview of experimental results on the cell-to-cell communication observed in different living system via ultra-weak photon emission to bring a better understanding and new perspective to the phenomenon.

Department of Biophysics Centre of the Region Haná for Biotechnological and Agricultural Research Faculty of Science Palacký University Šlechtitelů 11 783 71 Olomouc Czech Republic

Department of Biotechnology Chemistry and Pharmacy University of Siena Via A Moro 2 53100 Siena Italy

Department of Biotechnology Chemistry and Pharmacy University of Siena Via A Moro 2 53100 Siena Italy; Centre for Colloid and Surface Science University of Florence Via della Lastruccia 3 Sesto Fiorentino FI Italy

Laboratory of Applied Mathematics and Physics Department of Innovative Technologies DTI University of Applied Sciences of Southern Switzerland SUPSI Manno Switzerland

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