Increased sputum peripheral helper T cells are associated with the severity of rheumatoid arthritis but not with the severity of airway disease - Yokoi, Eito; Wakahara, Keiko; Nakamura, Saya; Fukutani, Eriko; Asai, Shuji; Takahashi, Nobunori; Kojima, Toshihisa; Iwano, Shingo; Shimada, Satoko; Chen-Yoshikawa, Toyofumi Fengshi; Hashimoto, Naozumi; Ishii, Makoto (Frontiers in Immunology, 2025)