{TAIL ~ Methods} of identifying compositions which affect {HEAD ~ hedgehog activity} based on inhibition of cholesterol modification of hedgehog protein are described 
{ TAIL ~ Methods } of identifying compositions which affect { HEAD ~ hedgehog activity } based on inhibition of cholesterol modification of hedgehog protein are described
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH