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Effects of the oral administration of lactobacilli on IL-6 production by SIEC. Ex vivo effects of the administration of viable and nonviable cultures of Lactobacillus casei CRL 431 (L.c.) and Lactobacillus helveticus R389 (L.h.) for 2 (left hatched bars), 5 (striped bars), or 7 (right striped bars) consecutive days on the production of IL-6 by SIEC. *, significantly different from control (P < 0.05). The error bars indicate standard deviations.
