{TAIL ~ The method} 1 wherein said at least one sterol is cholesterol, and the proportion of said sterol containing {HEAD ~ material} based on the amount of said packing material is approximately 40 weight percent 
{ TAIL ~ The method } 1 wherein said at least one sterol is cholesterol , and the proportion of said sterol containing { HEAD ~ material } based on the amount of said packing material is approximately 40 weight percent
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH