displacement of 3h-nka with different tachykinin-related peptides gave the following rank order of potencies : nka greater than nka ( 4-10 ) greater than kassinin greater than eledoisin greater than nkb much greater than substance p greater than physalaemin , which suggests that the binding site labeled by 3h-nka is different from substance p ( nk-1 ) -and nkb ( nk-3 ) -binding sites .
C0039241
tachykinin
C0038581
3h-nka