Abstract:
:The effect of negative pions (peak and plateau), photons (140 kV and 29 MeV), and 20 MeV electrons on the proliferative capacity of Ehrlich ascites carcinoma cells was investigated. Proliferative survival curves plotted for the modalities employed are presented. Under the experimental conditions used, the peak pions were more effective than plateau pions by a factor of about 1.4. For 50% survival, 140 kV X-rays had the same effect as peak pions but the latter was more effective (factor 1.2) at 10% survival level. When 140 kV X-rays were taken as the standard, following are the RBE values calculated as 50% survival level: plateau pions --0.73; peak pions --about 1.0; 29 MeV photons --0.73 and 20 MeV electrons --0.6. The results obtained are compared with those reported on other tumor systems and biological test objects.
journal_name
Radiat Environ Biophysjournal_title
Radiation and environmental biophysicsauthors
Rao KR,Blattmann H,Cordt I,Fritz-Niggli Hdoi
10.1007/BF01358287subject
Has Abstractpub_date
1979-08-10 00:00:00pages
261-5issue
3eissn
0301-634Xissn
1432-2099journal_volume
16pub_type
杂志文章abstract::The hypoxic cytotoxic effect of chlorpromazine towards E. coli B/r was observed to be dependent on temperature of incubation and irradiation. Increasing the temperature of incubation from ambient to 37 degrees C followed by irradiation revealed that the organisms showed radiosensitivity of a magnitude which was two to...
journal_title:Radiation and environmental biophysics
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journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
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journal_title:Radiation and environmental biophysics
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journal_title:Radiation and environmental biophysics
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pub_type: 杂志文章
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journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
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