although pertussis toxin ( pt ) treatment caused adp-ribosylation in both nih3t3 cells and ng108-15 cells , the bk-induced ins ( 1,4,5 ) p3 formation was considerably reduced in the former cells but not in the latter cells , suggesting that pt-sensitive and pt-insensitive gtp-binding proteins are involved in phosphoinositide phospholipase c ( pi-plc ) activation in fibroblasts and neuroblastoma cells , respectively .
C0007634
cells
C0016030
fibroblasts