Abstract
Enzyme-linked immunosorbent assay (ELISA) is an analytical technique to detect the presence of an antigen or antibody in a given sample. It shows wider applications in clinical diagnosis, in pathological studies, and in quality control studies. Virtually all microbial species have unique antigen(s), and such type of antigen(s) can be exploited as specific molecules of detection by ELISA. The variations in ELISA allow us to detect either antigen or antibody, identifying the different strains of microbes at a time and also in characterization of the epitope distribution on the microbial surface. Five types of variants have been developed in this assay: (1) Direct ELISA-use in the detection of antigen; (2) Indirect ELISA-use in the detection of antibody; (3) Sandwich ELISA-use in identification of different epitopes at a time; (4) Competitive ELISA-use in quantifying the antigen/antibody, and (5) Multiplex ELISA-use in identification of multiple antigens/antibodies at a time. Here, we discuss about different variants of ELISA and add detailed steps in performing these ELISA methods with their advantages and limitations.
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Verma, J., Saxena, S., Babu, S.G. (2013). ELISA-Based Identification and Detection of Microbes. In: Arora, D., Das, S., Sukumar, M. (eds) Analyzing Microbes. Springer Protocols Handbooks. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-34410-7_13
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DOI: https://doi.org/10.1007/978-3-642-34410-7_13
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