CD4 and rheumatoid arthritis: Lymphocyte subsets in the peripheral blood were similar distributed comparing RA+ T−CUS to RAnoT−CUS patients, apart from lower T helper cells (CD3+/CD4+) in RA+ T−CUS (784.5 [391.9–1083.0]/μl versus 1109.2 [813.7-1689.1]/μl, p = 0.031).