Expression of IL-4 receptor alpha in ectopic lymphoid tissue in chronic rhinosinusitisKengo Kanai1,2), Hiroyuki Kusano3), Aiko Oka1), Marie Yamada1), Ryo Takagi1), Isao Suzaki4), Kojiro Hirano4), Junqin Bai5), Takayuki Shiomi3), Mitsuhiro Okano1)1) Department of Otorhinolaryngology Head and Neck Surgery, International University of Health and Welfare Narita Hospital2) Department of Otorhinolaryngology Head and Neck Surgery, Japanese Red Cross Society Himeji Hospital3) Department of Pathology, International University of Health and Welfare Narita Hospital4) Department of Otorhinolaryngology Head and Neck Surgery, Showa University, School of Medicine5) Department of Otolaryngology, Northwestern University Feinberg School of MedicineORCID IDs of Kengo Kanai, Hiroyuki Kusano, Aiko Oka, Marie Yamada, Ryo Takagi, Isao Suzaki, Kojiro Hirano, Junqin Bai, Takayuki Shiomi and Mitsuhiro Okano are 0000-0002-6975-6688, 0009-0003-8847-4779, 0000-0002-3648-2879, 0009-0000-7810-8140, 0009-0007-3784-9306, 0000-0002-9078-1001, 0000-0002-4466-7953, 0000-0001-6012-2809, 0000-0002-4250-1204 and 0000-0002-4275-5781 respectively.