"Magnetic beads" are tiny balls made of a magnetic material. They can be used for various purposes, such as separating and collecting specific substances in scientific experiments or medical tests. Full definition
We have a limited amount of product available for trial by users tired of the limitations of magnetic beads or who want to manipulate cells in a new way. (akadeum.com)
To diagnose malaria, for instance, a blood sample is fed into a closed plastic tube filled with millions of tiny magnetic beads coated with nickel. (discovermagazine.com)
So the researchers turned to a machine made by Quanterix of Lexington, Massachusetts, that uses magnetic beads coated by an antibody that binds selectively and extremely tightly to the protein in the blood. (sciencemag.org)