Magnetic beads have been utilized in the biological field for several years due to their benefits of scalability, time efficiency, cost-effectiveness, and gentle separation of biological compounds using external magnetic fields.

These beads serve as effective tools for extracting and enriching biological molecules and can be employed in a variety of applications such as nucleic acid extraction and purification, drug delivery, diagnosis, immunoassay, DNA sequencing, and cell separation and analysis. The choice of surface coating material on magnetic beads is crucial for their functionality, with common options including silica, polysaccharides, and synthetic polymers.

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