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. 2022 Dec 15;12(12):1171. doi: 10.3390/bios12121171

Figure 5.

Figure 5

Schematic diagram of counting E. coli under dark-field, using antibody functionalization of MNP to form a gold ring structure around E. coli. (a) MNP probe was obtained by culture of E. coli antibody onto MNP. E. coli samples are first mixed with MNP probes to form probe-E. coli complexes. (b)The complex of E. coli and MNP probes was separated by a magnet and then counted under a dark-field microscope. [119]. Adapted with permission from Ref. [119]. Copyright © 2018 The Author(s).