. "Any process that activates or increases the frequency, rate or extent of signal transduction." . . . . . "positive regulation of signal transduction" . "activation of signal transduction" . "positive regulation of signaling pathway" . "positive regulation of signalling pathway" . "stimulation of signal transduction" . "up regulation of signal transduction" . "up-regulation of signal transduction" . "upregulation of signal transduction" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .