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