Tumor markers

Tumor markers are chemical substances that reflect the presence of tumors. They may not be found in normal adult tissues but only found in embryonic tissues, or their content in tumor tissues is much greater than that in normal tissues. Their presence or Quantitative changes can indicate the nature of the tumor, so as to understand the tumor tissue development, cell differentiation, and cell function, to help the diagnosis, classification, prognosis judgment and treatment guidance of the tumor.