“ PBZ in concentrations as low as 30 microM resulted … in Bmax or in affinity in binding of iodinated neurokinin A (substance K) to NK-2 sites in hamster bladder and in rat bladder, and … in affinity in binding of iodinated eledoisin to NK-3 sites in rat cerebral cortex.”
“ PBZ in concentrations up to 300 microM resulted in only a slight reduction in Bmax in binding of iodinated substance P to NK-1 sites in rat submaxillary gland and in rat urinary bladder.”