Abstract
Recently there are many studies on bio-stimulation effect by low-energy laser light irradiation using several types of animals. However, its characteristic mechanism are as well as not clear yet so that it is important to investigate this effect at biological cell levels. We paid our attention to the change of electric charge on cell surface, which is monitored by measuring cell electrophoretic mobility (E. P. M.), as a first trial of estimating quantitatively bio-stimulation effect. We report here for the first time measured variations of E. P. M. for two kinds of mouse T lymphocytes (CTLL-2 and T cell) after low-energy Ar laser light irradiation of 514.5nm wavelength. It was found that low-energy laser light irradiation causes some influence on the cell electrophoretic mobility of both lymphocytes, although their variations are different.