Application of Single-Domain Antibodies in Tumor Histochemistry
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High avidity, pentameric, single-domain antibodies, oligomerized through the B subunit of verotoxin, are excellent immunohistochemical reagents. The resulting molecules are termed pentabodies. Here, we describe the immunostaining of tissue sections with ES1, a pentabody recognizing CEACAM6 which is overexpressed in several cancers. The advantages of pentabodies, compared to conventional antibody reagents, in immunohistochemical studies are highlighted.
