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A Solid-Phase Mutual Inhibition Assay with Labeled Antigen

with the respective MAbs, competitor MAbs, biotinylated antigen, and avidin–peroxidase conjugate. Using carcinoembryonic antigen (CEA) as a model antigen, the method was applied to determine epitope specificities of anti-CEA MAbs. A constant amount of biotinylated CEA

肿瘤抗原[tumor antigen]

球蛋白（alpha-fetoprotein, AFP）、癌胚抗原（carcinoembryonic antigen, CEA）、胚胎性硫糖蛋白抗原（fetal sulfoslycoprotein antigen, FSA）等。胚胎抗原是最早用于肿瘤免疫学诊断和免疫学治疗的靶抗原。由于个体发育过程中对此类抗原已形成免疫耐受，故难以诱导机体产生针对胚胎抗原的杀瘤效应。 （六）过度表达的抗原 组织细胞发生癌变后，多种信号转导分子的表达量远高于正常

Transforming Growth Factor Beta: A Plasma Tumor Marker

are prostate-specific antigen (PSA), carcinoembryonic antigen (CEA), β-human chorionic gonadotropin (β-HCG), and CA-125. Tumor markers may be specific for certain tumors, such as PSA for prostate cancer, or more generally expressed, such as CEA.