Polyclonal, newly derived T cells with low expression of inhibitory molecule PD-1 in tonsils define the phenotype of lymphocytes in children with Periodic Fever, Aphtous Stomatitis, Pharyngitis and Adenitis (PFAPA) syndrome

Dytrych P1, Krol P2, Kotrova M3, Kuzilkova D3, Hubacek P3,4, Krol L3, Katra R1, Hrusak O3, Kabelka Z1, Dolezalova P2, Kalina T3, Fronkova E3 Department of ENT, Charles University, 2nd Faculty of Medicine, Charles University Prague and University Hospital Motol, Czech Republic1; Pediatric Rheumatology Unit, Department of Pediatrics and Adolescent Medicine, Charles University Prague and General University Hospital in Prague, 1st Faculty of Medicine, Czech Republic2; CLIP, Department of Paediatric Haematology/Oncology, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol Czech Republic3; Department of Medical Microbiology, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, Czech Republic4