. "''N''-acetylgalactosamine-6-sulfatase" . . . "N-acetylgalactosamine-4-sulfatase" . . . . . . "N-acetylgalactosamine-6-sulfatase" . . "N-acetylgalactosamine-4-sulfatase" . . "n-acetylgalactosamine-4-sulfatase" . "3.1.6.12" . . . . .