Open access
Aug 2026
Smoking-associated IgG4-positive cell infiltration in rheumatoid arthritis lung: an exploratory cross-sectional study
Tissue IgG4-positive cell infiltration was observed only among male ever-smokers and was accompanied by a distinct BAL immune-cell profile without parallel peripheral-blood changes, and should be regarded as hypothesis-generating and require validation in larger prospective studies.
Y. Tsuji, Tomohiro Koga, Nana Nakada et al.
· Frontiers in Immunology · 0 citations