Latex beads, amine-modified polystyrene, are widely used in biomedical research and diagnostics due to their ability to bind biomolecules. They serve as solid supports for immobilizing proteins, antibodies, and nucleic acids, making them essential in immunoassays, such as ELISA, for detecting specific antigens or antibodies. These beads are also utilized in cell separation techniques, where their surface functionalization allows for the capture and isolation of specific cell types. Additionally, they play a role in drug delivery systems by acting as carriers for targeted therapeutic agents. In material science, they are employed as model colloids for studying particle interactions and self-assembly processes. Their amine groups enable further chemical modifications, enhancing their versatility in various applications.