. "\"Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of interleukin-1.\" [GOC:go_curators]" . . "positive regulation of interleukin-1 biosynthetic process" . "positive regulation of IL-1 biosynthesis" . "positive regulation of IL-1 biosynthetic process" . "positive regulation of interleukin-1 anabolism" . "positive regulation of interleukin-1 biosynthesis" . "positive regulation of interleukin-1 formation" . "positive regulation of interleukin-1 synthesis" . "up regulation of interleukin-1 biosynthetic process" . "up-regulation of interleukin-1 biosynthetic process" . "upregulation of interleukin-1 biosynthetic process" . . . "activation of interleukin-1 biosynthetic process" . "stimulation of interleukin-1 biosynthetic process" .