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Schematic design and results of the lung cancer biosensor: The FBG region was coated with 35 nm gold film. PAA/CS (poly (acrylic acid)/chitosan) was coated on the region 2 while region 1 was functionalized with Probe DNA sequences for detection of exon-20 gene. Reprinted with permission from Ref. [81]. Copyright 2022, Elsevier.
