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. 2017 Aug 29;409(27):6337–6347. doi: 10.1007/s00216-017-0566-5

Fig. 2.

Fig. 2

a–d Schematic illustration of the SERS-based immunoassay: a glass slide was modified with diatom frustules (b shows an SEM image of a portion of the modified slide); c antibody capture and immobilization using the SERS immunosensor for interleukin 8 detection (d shows a close-up illustrating the bonding to the antibody)