IL9R and Alzheimer disease: As a next step, we performed confirmatory immunofluorescence stainings of the combination of surface markers CD8, CD129 (IL9R) and CD314 (KLRK1), characteristic for these top 10 oligoclones (Fig. 4C), by using an independent set of biopsy samples from HC, trunk AD, head/neck AD and DAHND (Supplementary Data 1).