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. Author manuscript; available in PMC: 2015 Jun 15.
Published in final edited form as: Biosens Bioelectron. 2014 Jan 18;56:359–367. doi: 10.1016/j.bios.2014.01.018

Fig. 2.

Fig. 2

Typical SPR curves obtained with the fiber sensor. (A) SPR-TFBG transmission spectra. The black spectrum is obtained for a sensor with NIH-3T3 cells on its surface. The blue spectrum is from the same sensor after the cells were detached using trypsin (4×). Quantitative information is extracted by measuring the amplitude change of the most sensitive resonance indicated by an arrow; (B) Change in the amplitude of the most sensitive SPR resonance following the addition of trypsin (4×); (C) Reproducibility of experiments with trypsin at 2× concentration. The black curve is the average of the all SPR signals with a confidence interval of σ=0.578.