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. 2017 Mar 30;1(2):141–153. doi: 10.7150/ntno.18897

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(A) LDI-MS spectra recorded using (a) AS1411-Au NPs/Au@PC NP ([AS1411-Au NPs] = 0.2 nM; [Au@PC NP] = 5 pM), (b) AS1411-Au NPs (0.2 nM), and (c) rDNA-Au NPs/Au@PC NP ([random DNA-Au NPs] = 0.2 nM; [Au@PC NP] = 5 pM) as probes for the detection of 10⁴ MCF-7 cells. (B) Peak intensities of [Au₁]⁺ (I_[Au1]+) obtained from (a) AS1411-Au NPs/Au@PC NP, (b) AS1411-Au NPs, and (c) rDNA-Au NPs/Au@PC NP after labeling of MCF-7 cells.