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https://www.jci.org/articles/view/39748/pdf JCI - CD81 gene defect in humans disrupts CD19 complex formation and leads to antibody deficiency https://elifesciences.org/articles/111259 Correction: CD81+ senescent-like fibroblasts exaggerate inflammation and activate neutrophils via... correctioncd81senescentlikefibroblasts https://www.thermofisher.com/antibody/product/CD81-Antibody-clone-9F7-Recombinant-Monoclonal/MA5-33123 CD81 Recombinant Rabbit Monoclonal Antibody (9F7) | Invitrogen (MA5-33123) Detect CD81 in Flow, WB, IHC (P), ICC/IF, ELISA. Reacts with Mouse, Rabbit, Armenian Hamster, Hamster, Goat. Catalog # MA5-33123 rabbit monoclonalcd81recombinantantibodyinvitrogen https://elifesciences.org/articles/52337/figures Figures and data in A dynamic interaction between CD19 and the tetraspanin CD81 controls B cell... The tetraspanin CD81 uses its ectodomain to export CD19, and the interaction of the two proteins is dynamically regulated by B cell activation state.