The detective sensitivity and specificity of homologous assay were compared with heterologous assay on MCPA.And the recognition mechanism of antibody was discribed.

• 摘要以获得的抗2甲4氯抗体及其包被抗原为研究对象，比较了同源和异源分析的灵敏度和特异性，并试图进一步揭示抗体的识别机制。