. "Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of nitric oxide." . . . . "positive regulation of nitric oxide biosynthetic process" . "activation of nitric oxide biosynthetic process" . "positive regulation of nitric oxide anabolism" . "positive regulation of nitric oxide biosynthesis" . "positive regulation of nitric oxide formation" . "positive regulation of nitric oxide synthesis" . "stimulation of nitric oxide biosynthetic process" . "up regulation of nitric oxide biosynthetic process" . "up-regulation of nitric oxide biosynthetic process" . "upregulation of nitric oxide biosynthetic process" . . .