Used in immunological research to detect and quantify CD9 protein levels in biological samples. Commonly applied in studies involving cell adhesion, migration, and signal transduction. Widely utilized in cancer research due to CD9's role in tumor progression and metastasis. Also employed in stem cell and exosome research, as CD9 is a marker for exosomal membranes and involved in cell-cell interactions. The kit enables high-throughput analysis in cell culture supernatants, plasma, serum, and tissue lysates. Suitable for investigating immune responses and cellular differentiation processes.