| http://www.w3.org/ns/prov#value | - Crossing the blood-brain barrier, as well as oral, subcutaneous, intranasal, sublingual, buccal, ocular, intracolonic, intraduodenal, mucosal, transdermnal or pulmonary delivery to the circulatory system for many biologically active agents could be the route of choice for administration to animals if not for physical barriers such as the skin, lipid bi-layers, and various organ membranes that are
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