. "The aggregation, arrangement and bonding together of a ligand-bound type II transforming growth factor beta (TGF-beta) receptor dimer with a type I TGF-beta receptor dimer, following ligand binding, to form a heterotetrameric TGF-beta receptor complex." . . . "transforming growth factor beta receptor complex assembly" . "TGF-beta receptor complex assembly" . "TGF-beta:type II receptor:type I receptor complex assembly" . "TGFbeta receptor complex assembly" . . .