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Optical biosensors have great significance for rapid and sensitive detection and monitoring of biomolecular interactions. Here, recent advancement in the nano-functionalized long-period fiber grating (LPFG) is used to develop a cost-effective approach for label-free and real-time detection of the carbonic anhydrase-IX (CA9) monoclonal antibody, a diagnostic biomarker in hypoxia condition cultured carcinoma cells.
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Tyagi et al. (2017) studied this question.
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