癌症病人血清中出现某种特异标志物质或其浓度升高具有重要的价值。它不仅表明有恶性肿瘤的生长,而且提示了其在机体内的部位。虽然至今还没有得到一种具有足够特异性和敏感性的肿瘤标志物,包括较新的由单克隆抗体识别的,但对许多肿瘤标志物出现阳性已经有了经验,所以将它们作为 The presence of a specific marker substance or elevated serum concentration in cancer patients is of great value. It not only indicates the growth of malignant tumors, but also indicates its location in the body. Although a tumor marker with sufficient specificity and sensitivity has not yet been obtained, including the newer monoclonal antibodies, it has been known to be positive for many tumor markers, so they are used as