Cytokine production by mature differentiated DCs. (A) Production of IL-10, TGF-β1, IL-6, and IL-23 in mature DC culture supernatants was quantified by ELISA. Data are pg/mL ± SEM for n = 9 nonallergics (NA) and n = 8 allergics (A). **P < .01. P < .05 (A vs NA); and ^##P < .01 (A vs NA). (B) Production of IL-10 in mature DC culture supernatants was quantified by ELISA and presented as above. n = 3 NA subjects.