Fig. 2.
(a) Schematic representation of the fabrication of anti-E. coli antibodies-conjugated AuNR nanoprobes. (b) TEM images of the specific binding of anti-E. coli antibodies-conjugated AuNR nanoprobes with E. coli cells with different coverage. (c) UV-vis absorbance spectra of anti-E. coli antibodies-conjugated AuNRs with various concentrations of E. coli cells (from 102 to 106 CFU·mL−1). Reproduced with permission from ref. 9. Copyright 2008, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.