As a result of an analysis of macromolecules properties in the coherent optical radiation field and with allowance for the
experimentally obtained unique data on the interaction of lazer radiation with biomolecules (dependence of the
interaction efficiency on the coherence length, presence of the effect in the spectra region far from the absorption band),
a mechanism of wave interaction is developed. Using this mathematical model, the calculations of a change in the
macromolecules oscillatory energy in the coherent radiation field are performed. It is shown that the increase of
macromolecules oscillatory energy depends strongly on the coherence length of radiation. On exposure to noncoherent
radiation, the biomolecules oscillatory energy practically does not change, whereas on exposure to laser radiation
(coherence length ≈3 cm), energy of oscillations of atoms increases by an order of 2÷4, which results in a change in the
conformation of biomolecules and activity of enzymes. Recently a lot of data are received concerning the change of lysosomal enzymes activity in blood plasma under action of laser radiation.
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