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Sonic hedgehog protein signals not as a hydrolytic enzyme but as an apparent ligand for patched.
Proceedings of the National Academy of Sciences of the United States of America [0027-8424] Fuse, N yr:1999 vol:96 iss:20 pg:10992 -10999
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Porter, J A
Hall, T M
Leahy, D J
Beachy, P A
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