To validate our findings that CD9 expression (marker of the DAM cluster26) primarily increased in WT cells (not TREM2 KO) in the AD model brain (not WT) we performed flow cytometry for CD9 in all 4 sets of animals (MITRG + WT, MITRG + KO, 5x-MITRG + WT, 5x-MITRG + KO). The gene discussed is CD9; the disease is Alzheimer disease.