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