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We introduce the zero-divisor graph for an abelian regular ring and show that if R, S are abelian regular, then (Ko(R), [R]) ≌ (Ko(S), [S]) if and only if they have isomorphic reduced zero-divisor graphs. It is shown that the maximal right quotient ring of a potent semiprimitive normal ring is abelian regular, moreover, the zero-divisor graph of such a ring is studied.