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Human B cells produce IL-40. (A) qRT-PCR analysis of IL-40 expression in human resting (R) and activated (A) B cells. Cells were activated for 24 h with anti-CD40 Ab + IL-4. Data are representative of three independent experiments (mean ± SEM). (B) IL-40 expression pattern in several human diffuse large B cell lymphoma cell lines (qPCR). A representative experiment out of three is shown. ***p < 0.0005.
