To achieve the small particle size, {HEAD ~ the drug} may be dissolved in {TAIL ~ an organic solvent}, such as dimethyl sulfoxide or ethanol, together with a gelling agent or thickener according to the invention 
To achieve the small particle size , { HEAD ~ the drug } may be dissolved in { TAIL ~ an organic solvent } , such as dimethyl sulfoxide or ethanol , together with a gelling agent or thickener according to the invention
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH