Table 2 Fractions of IgG‐positive and IgG‐negative B cells that are positive for RAG genes.

	Healthy		o‐JIA
	IgG pos	IgG neg	IgG pos	IgG neg
CD19+ CD27+ CD5+ (n)	19	207	16	168
RAG1 (%)	11	11	13	18
RAG2 (%)	32	29	0	7
RAG1+RAG2 (%)	0	1	0	2
CD19+CD27+CD5− (n)	43	140	66	118
RAG1 (%)	30 (p<0.01)	11	23	22
RAG2 (%)	33	27	14	11
RAG1+RAG2 (%)	9	4	0	0

Ig, immunoglobulin, neg, negative; o‐JIA, oligoarticular juvenile idiopathic arthritis; pos, positive; RAG, recombination‐activating gene.