We determined the percentages of Tfr-like, mTfr-like, Tfh-like, and Tfh-like cells and the Tfh1-like, Tfh2-like, Tfh17-like, and Tfh1/17-like cell subsets in the peripheral blood of RA patients and healthy controls using flow cytometry. The gene discussed is TFRC; the disease is rheumatoid arthritis.