Electron spin resonance study of changes during development of solid Yoshida tumour. I: Ascorbyl radical

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The ascorbyl radical concentration has been observed, by means of electron spin resonance spectroscopy, in the blood and spleen of female Wistar rats carrying a Yoshida tumour. The ascorbyl radical concentration of the tumour tissue itself was studied as the tumour was developing, and as it was regressing after treatment with methylene dimethane sulphonate. Changes in the concentration of this radical may be related to host tumour reactions.

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