| 摘要 |
A method for diagnosing and monitoring cancer, which comprises precipitating certain components from blood serum by addition of a benzenesulfonic acid or a benzylsulfonic acid, determining the sialic acid content of the supernatant, and comparing its sialic acid content with the sialic acid content of sera from healthy subjects after identical treatment. The determination of the sialic acid by the thiobarbituric acid colorimetric method is improved by addition of N,N-dimethylacetamide during development of the chromophore.
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