[Globin coupled sensor and photosensitive signaling network--receptors of monochromatic light in bacteria Escherichia coli cells].

The effect of He-Ne laser radiation in wide range of intensities on E. coli cells division was studied in dependence on dose of light, on time of irradiation as well as on cAMP content in initial bacterial culture. Two maxima in E.

[Effect of He-Ne-laser irradiation on plasmid transformation of Escherichia coli bacteria].

The influence of the of radiation a He-Ne laser (632.8 nm, 30 W/m2, 5-20 J/m2) on the transformation of Escherichia coli cells with plasmid DNA was studied. The irradiation of a mixture of bacterial cells and plasmid DNA increased the transformation efficiency 2.

[A bacterial model for research on the effect of laser radiation on the intensity of cell division].

A bacterial model is proposed for the prognosing, at the cellular level, of the effectiveness and safety of low-intensity laser therapy. In experiments with E. coli WP2, a study was made of the effect of continuous optical radiation as well as of pulse radiation at medical installations "Uzor" (890 nm, 1.

[The effect of substrates and irradiation with low intensity visible light on the rate of division of Escherichia coli].

The effect of He--Ne laser irradiation (lambda = 632.8 nm, D = 4.10(3) J/m2) on the growth of Escherichia coli cultures was studied in a minimal medium containing glucose, glycerol of arabinose.

[Effect of He-Ne laser radiation on the bacteriophage T4-Escherichia coli system].

Exposure of T4 bacteriophage, having no red light chromophores, to He-Ne laser (lambda = 632.8 nm) of 10(3)-6 X 10(4) J/m2 does not influence its lytic properties. Irradiation of E.

[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.

[Lethal and mutagenic effect of the XeCl laser on Escherichia coli].

The survival rate and reversions to tryptophan-independence of Escherichia coli after XeCl laser irradiation (lambda = 308 nm) within the dose range from 10(3) to 10(5) J/m2 have been studied to show that LD37 is 10(4) J/m2, the survival rate at a maximum dose of 10(5)J/m2 is 1 per cent, and the number of mutants per 10(6) cells survived is 100.

[Effect of low-intensity monochromatic visible light on the growth of Escherichia coli cultures].

The goal of this work was to study the effect of monochromatic visible light having a low intensity on Escherichia coli WP2 growth. The growth was accelerated by violet light (lambda = 404 nm) at a dose of 10--100 J/m2 and by blue (lambda = 454 nm), green (lambda = 520 to 560 nm), red (lambda = 633 nm) and far red light (lambda = 700 to 750 nm) at a dose of 10(3)--10(4) J/m2). The components of E.

[The effect of low-intensity light from the red and far red regions of the spectrum on Escherichia coli].

The effect of red and far red light having a low intensity on Escherichia coli growth was studied. The growth accelerated when the culture was irradiated with the light at a dose of 1--4 X 10(3) J/m2. When the light of the two spectral regions was used together, the effect depended on the dose and order of the irradiation.

[Action of the radiation from a neon laser and from noncoherent blue light on Escherichia coli bacteria].

It was shown that under defined conditions blue light can accelerate E. coli WP2 growth. The stimulatory effect is a function of radiation dose, intensity wave length, and postirradiation incubation time.