Anti-CD69 Antibody

CD69 is a type II transmembrane C-type lectin that functions as one of the earliest cell-surface markers of leukocyte activation, appearing on T cells, B cells, and natural killer cells within hours of stimulation through the T-cell receptor or mitogenic signals. Antibodies.com provides this rabbit polyclonal reagent for tracking immune activation in human samples, with applications in western blot and immunohistochemistry workflows on either fresh frozen or formalin-fixed tissue sections.

The unconjugated antibody is supplied at 100 µl per vial and is raised against human CD69, supporting immunoblotting and chromogenic tissue staining experiments. For short-term use, store at 4°C in a frost-free environment; aliquot upon receipt to limit freeze-thaw cycles that can erode polyclonal titre. Researchers studying transplant rejection, autoimmune inflammation, viral immunity, and vaccine responses routinely use CD69 staining as a direct readout for recent or ongoing T-cell engagement with antigen.