. "The method of claim 1, wherein at least one terminal-phosphate-labeled nucleotide is represented by the formula: wherein P is phosphate (PO3) and derivatives thereof, n is 2 or greater; Y is an oxygen or sulfur atom; B is a nitrogen-containing heterocyclic base; S is an acyclic moiety, carbocyclic moiety or sugar moiety; L is an enzyme-activatable label containing a hydroxyl group, a sulfhydryl gr" . . .