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. 2019 Apr 8;19(7):1663. doi: 10.3390/s19071663

Figure 1.

Figure 1

Figure 1

Fabrication steps of the microfluidic device and the experimental measurement setup. (a) Concentration gradient generator (CGG) part fabrication procedure. (b) Micro-well array part fabrication procedure. (c) Schematic of the experimental setup detection GPR120 receptors using surface-enhanced Raman spectroscopy (SERS).