Quantitative Detection of Gastrointestinal Tumor Markers Using a Machine Learning Algorithm and Multicolor Quantum Dot Biosensor

Figure 8

Fluorescence spectrum of QDs. (a) Fluorescence spectra of QDs525 and antibody conjugate before and after reaction; (b) fluorescence spectra of QDs565 and antibody conjugate before and after reaction; (c) fluorescence spectra of QDs605-CA19-9 and antibody conjugate before and after reaction; (d) fluorescence spectra before and after the reaction between QDs645-CEA and antibody conjugate.

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