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IP address: 44.200.230.43
Time: 2024-03-28T17:14:39Z
URL: http://scholar.google.com/scholar_lookup?title=Sonic+hedgehog%2C+a+member+of+a+family+of+putative+signaling+molecules%2C+is+implicated+in+the+regulation+of+CNS+polarity&year=1993&author=Echelard&journal=Cell&volume=75&pages=1417-1430&doi=10.1016%2F0092-8674%2893%2990627-3&pmid=7916661