Immuno-PCR

Carcinoembryonic antigen (CEA) 2001 A Circulating CEA in human sera 92.3% of patients with high CEA levels and 50% of patients with normal CEA levels were found positive Ren et al. [18], use of a bispecific CEAScFv-streptavidin fusion protein-based immuno-PCR technique (see Section 2.1.1)... 

For any standard ELISA application requiring enhanced sensitivity in combination with almost complete retaining of all ELISA advantages, such as microplate format, common laboratory equipment and the immunological specificity for target antigens, however, Immuno-PCR is worth consideration. 

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Chye SM, Lin SR, Chen YL, Chung LY, Yen CM. Immuno-PCR for detection of antigen to Angiostrongylus cantonensis circulating fifth-stage worms. Clin Chem 2004 50 (1) 51—57. 

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