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Fig. 2 | Arthritis Research & Therapy

Fig. 2

From: Sex-based differences in association between circulating T cell subsets and disease activity in untreated early rheumatoid arthritis patients

Fig. 2

Relationship between T cell subset proportions and disease activity measures in male and female untreated early RA patients. Principal component analysis (PCA) plots depicting the association between CD4+ T cell subsets proportions and disease activity measures (a) in male (n = 20–22) and (b) in female (n = 48–50) ueRA patients. Variables projected close to each other on the same side of the axis associate positively, while variables on opposite sides of an axis associate negatively. Filled symbols indicate CD4+ T cell subset variables and open symbols indicate disease activity variables

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