. "Any process that activates or increases the frequency, rate, or extent of natural killer cell tolerance induction." . . . . "positive regulation of natural killer cell tolerance induction" . "activation of natural killer cell tolerance induction" . "positive regulation of NK cell tolerance induction" . "stimulation of natural killer cell tolerance induction" . "up regulation of natural killer cell tolerance induction" . "up-regulation of natural killer cell tolerance induction" . "upregulation of natural killer cell tolerance induction" . .