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. 2014 May 16;14(5):8605–8632. doi: 10.3390/s140508605

Figure 5.

Figure 5.

(a) SEM image of ZnO nanotubes; (b) calibration curve of bare ZnO nanotubes for CRP-antigen; (c) calibration curve of antibody-immobilized ZnO nanotubes for CRP-antigen; and (d) response time for all concentrations of the CRP-antigen biosensor [82].