human peripheral monocytes stimulated by either muramyl dipeptide [ n-acetyl-muramoyl-l-alanyl-d-isoglutamine ] , bacterial lipopolysaccharide or lymphokine-containing supernatants of human lymphocytes , could be shown to produce and secrete appreciable activities of a 52 000-mr plasminogen activator .
C0024297
lymphokine
C0024264
lymphocytes