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. 2015 May 28;5:10144. doi: 10.1038/srep10144

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Copyright © 2015, Macmillan Publishers Limited

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Stability and cross-contamination test of SERS nano-identifier (SERS ID)-encoded TentaGel (TG) beads. a) Average number of SERS IDs on the TG beads after treatment with swelling solvents (dichloromethane, DCM), 3% bovine serum albumin (BSA) containing phosphate-buffered saline (PBS, pH 7.0) and 1% Tween 20 containing PBS (pH 7.0). The number was normalized to the total number of SERS IDs on non-treated beads. b) Signal intensities of 488 cm⁻¹ band (4-BBT) and 539 cm⁻¹ band (4-CBT) from SERS spectrum of SERS ID_[4BBT]- or SERS ID_[4CBT]-encoded TG beads after treatment with 3% BSA containing PBS (pH 7.0), and c) 1% Tween 20 containing PBS (pH 7.0) (The number of measured beads = 6).