. "\"Any process that stops, prevents, or reduces the frequency, rate, or extent of interleukin-12 production.\" [GOC:mah]" . . "negative regulation of interleukin-12 production" . "down regulation of interleukin-12 production" . "down-regulation of interleukin-12 production" . "downregulation of interleukin-12 production" . "negative regulation of IL-12 production" . . . "inhibition of interleukin-12 production" .