Tumor Mar¬kers and Their Use in Clinical Practice
a Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, b Department of Biochemistry and Microbiology, Institute of Chemical Technology, Prague
Tumor markers known also as cancer or oncological markers are substances produced either by tumor or normal cells as a response to the presence of cancer . The markers are used for the detection, diagnosis, prognosis and control of treatment. There is no absolutely specific or universal cancer marker; therefore different markers for different cancer types are used in clinical practice. A problematic feature of cancer markers is their falsely positi¬ve results under physiological and non-cancer conditions.
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