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. 2009 May 7;1(5-6):345–362. doi: 10.1039/b905502a

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Fig11 — (A) Reflection spectra from inverse-opaline photonic beads with seven different pore sizes. (B) Spectral shifts induced in two kinds of beads due to antigen binding, showing label-free binding detection functionality. The third bead has not exhibited this shift (reproduced with permission from ref. 43, copyright Wiley-VCH Verlag GmbH & Co. KGaA).