Selective collection and detection of MCF-7 breast cancer cells using aptamer-functionalized magnetic beads and quantum dots based nano-bio-probes

- Aptamer-cell affinity interaction was employed for selective collection and detection of MCF-7.
- CdTe QDs and aptamer were coated on SiO2 NPs for bio-labeling.
- Good sensitivity was achieved due to the signal amplification of SiO2 NPs.