Latex beads, amine-modified polystyrene, are widely used in biomedical research and diagnostics. They serve as solid supports for the immobilization of proteins, antibodies, and nucleic acids, making them essential in immunoassays like ELISA. These beads are also employed in cell separation techniques, where their surface properties enable the binding and isolation of specific cell types. In drug delivery systems, they act as carriers for targeted release of therapeutic agents. Additionally, their use in flow cytometry as calibration standards ensures accurate instrument performance. Their amine groups facilitate surface modification, enhancing their versatility in various scientific applications.