ABSTRACT
This chapter describes some short-term responses to irradiation occuring in mitochondria and cellular membrane. Beside data about stimulation of respiration and ATP synthesis by irradiation there exist data about inhibitive action of light on these processes. Our experiments have been aimed at revealing the changes in concentrations of cyclic 3', 5' — adenosine-monophosphate level in mammalian cells after irradiation with various wavelengths of visible light. Concentrations of cyclic 3', 5' — adenosine-monophosphate is considered to be one of the regulators of cellular multiplication, the existance of it established in a great variety of eucaryotic and procaryotic cell. Preparations for irradiation and the extraction of concentrations of cyclic 3', 5' — adenosine-monophosphate were carried out in a weak green light causing no DNA or RNA synthesis stimulation in our previous experiments. The microbeam irradiation of crustacean neutron with blue light caused changes in its impulse frequency. Blue light laser was also used to stimulate the abdominal ganglion of the mollusk Aplysia.
