Effect of environment in the irradiation of DNA with fast electrons of different energy spectra

Book · Sun Dec 31 23:00:00 EST 1972

OSTI ID:4323724

Elmshaeuser, H J

From annual meeting of the Deutsche Gesellschaft fuer Biophysik; Juelich, Germany (27 Sep 1973). The effect of oxygen, nitrogen, air as well as 0.4 m NaCl on the change of uv absorption in the irradiation of DNA with fast electrons was investigated. In all cases examined, the Na ions have a protecting effect. In the presence of Na ions, O/sub 2/ has a protecting effect; in the absence of Na ions, on the other hand, O/sub 2/ has a sensitizing effect. Deep irradiation showed a more marked change of uv absorption only in the presence of oxygen and absence of Na/sup +/, and a lesser change of the uv absorption in the presence of Na/sup +/, compared with surface irradiation. (GE)

• Research Organization: Univ., Gottingen, Ger.
• NSA Number: NSA-29-018559
• OSTI ID: 4323724
• Country of Publication: Germany
• Language: English

Related Subjects

*DNA-- BIOLOGICAL RADIATION EFFECTS
*NITROGEN-- RADIOSENSITIVITY EFFECTS
*OXYGEN-- RADIOSENSITIVITY EFFECTS
*SODIUM COMPOUNDS-- RADIOSENSITIVITY EFFECTS
CATIONS
CHEMICAL RADIATION EFFECTS
ELECTRON BEAMS
IONS
IRRADIATION
LET
N48110* --Life Sciences--Radiation Effects on Biochemicals-- In-Vitro
OXYGEN ENHANCEMENT RATIO
RADIOLYSIS
RADIOSENSITIVITY
RESPONSE MODIFYING FACTORS
SODIUM CHLORIDES