. "Any process that stops, prevents, or reduces the frequency, rate, or extent of leukocyte chemotaxis." . . . . "negative regulation of leukocyte chemotaxis" . "down regulation of leukocyte chemotaxis" . "down-regulation of leukocyte chemotaxis" . "downregulation of leukocyte chemotaxis" . "inhibition of leukocyte chemotaxis" . "negative regulation of immune cell chemotaxis" . "negative regulation of leucocyte chemotaxis" . . . . . . . . . . . .