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If the absorption of radiation occurs in the molecule in which the lesion appears, then this is the direct action of radiation ,while with indirect action the absorption of the radiation energy and the response to this energy occur in different molecules. This definition is considerably more rigorous than the one used in the past, in which the irradiation of dry systems was considered as direct, while the indirect effect was considered to occur predominantly in the presence of water.

It is generally accepted, that the induction of DNA damage by photons can be separated into two pathways: direct actions due to the deposition ...

1. A Direct Action. — The radiations provoke in the cell itself, within the molecular structure of which its living matter is composed, a disruption of ...

Direct effects are caused by radiation, when radiation interacts directly with the atoms of the DNA molecule, or some other cellular component critical to the survival of the cell. The probability of the radiation interacting with the DNA molecule is very small since these critical components make up such a small part of the cell. Indirect effects.

Cell damage can be caused by direct or indirect ionization (Figure 1). Direct ionization occurs when charged particles, e.g., electrons, with sufficient ...

Radiation can induce different types of cell damage: directly, it can induce DNA single- and double-strand breaks; indirectly, it can induce the formation of ...

Radiation damage to the cell can be caused by the direct or indirect action of radiation on the DNA molecules. In the direct action, the radiation hits the DNA molecule directly, disrupting the molecular structure. Such structural change leads to cell damage or even cell death.

Holsten, Sugii and Steward1 have recently added the colony-forming ability of single, isolated carrot cells to the spectrum of biological systems in which ...

Direct effects. Direct effects are caused by radiation, when radiation interacts directly with the atoms of the DNA molecule, or some other cellular component ...

Dec 14, 2019 · Direct effects are caused by radiation, when radiation interacts directly with the atoms of the DNA molecule, or some other cellular component critical to the survival of the cell. The probability of the radiation interacting with the DNA molecule is very small since these critical components make up such a small part of the cell. Indirect effects.

If the absorption of radiation occurs in the molecule in which the lesion appears, then this is the direct action of radiation ,while with indirect action the absorption of the radiation energy and the response to this energy occur in different molecules.

Direct effects are caused by radiation, when radiation interacts directly with the atoms of the DNA molecule, or some other cellular component critical to the survival of the cell. The probability of the radiation interacting with the DNA molecule is very small since these critical components make up such a small part of the cell. Indirect effects.

atoms, there are two mechanisms by which radiation ultimately affects cells. These two mechanisms are commonly called direct and indirect effects.

Radiation damage to the cell can be caused by the direct or indirect action of radiation on the DNA molecules. In the direct action, the radiation hits the ...

Download scientific diagram | Direct and indirect actions of radiation. from publication: Biophysical and Radiobiological Aspects of Heavy Charged Particles | …

14.12.2019 · Direct effects are caused by radiation, when radiation interacts directly with the atoms of the DNA molecule, or some other cellular component critical to the survival of the cell. The probability of the radiation interacting with the DNA molecule is very small since these critical components make up such a small part of the cell. Indirect effects.

It is now known that even in the irradiation of the purest dry substances under high vacuum, indirect action contributes to the observed damage. The indirect ...

1. A Direct Action. — The radiations provoke in the cell itself, within the molecular structure of which its living matter is composed, a disruption of equilibrium, which results in the more or less rapid death of the element itself or of its derivatives. 2.

The discussion of this mechanism of action of radiation has already led to innumerable publications. I believe it is permissible to say that agreement is not far from being established concerning the normal elements, the radiations exercise directly their elective cellular effects, and the indirect effect, even by those authors who admit such an effect, is no longer considered as …