Latex beads, amine-modified polystyrene, are widely used in biomedical research and diagnostics. They serve as solid supports for the immobilization of biomolecules such as antibodies, proteins, and nucleic acids, making them essential in immunoassays and molecular detection techniques. Their amine groups facilitate covalent bonding with target molecules, enhancing stability and specificity in assays like ELISA and flow cytometry. These beads are also employed in cell separation and sorting processes, where their surface modification allows for selective binding to specific cell types. Additionally, they are utilized in drug delivery systems, where their functionalized surface can be tailored to carry therapeutic agents. In material science, they act as model colloids for studying particle interactions and self-assembly behaviors. Their versatility and customizable surface properties make them valuable tools in both research and industrial applications.