[Inactivation of alpha VEE virus using a high intensity laser with UV-radiation].

Inactivation of VEE virus with laser UV impulses of nano- and picosecond duration was investigated. It has been shown that in both cases there is a decrease of the inactivation cross-section with the rise of irradiation intensity. It points to the fact that the major lethal photoproduct in VEE is formed by a single-quantum mechanism.

[Specificity of the lethal and mutagenic actions of pico-second laser pulses of 532-nm wavelength].

A study was made of the lethal effect of pulse laser (second harmonic Nd+3:YAG laser of 532 nm, pulse length 3.3.10(-11) s, peak intensity from 4.

[Laser-induced covalent cross-links in DNA].

Formation of cross-links and local denaturated sites in double-stranded DNA of bacteriophage CD under picosecond laser UV irradiation was investigated by fluorescent method. It is shown that passing from low-intensity UV irradiation with mercury lamp to high-intensity laser UV irradiation quantum, yield of cross-links formation increases by an order.