| http://www.w3.org/ns/prov#value | - al, 1996, Pharmaceutical Res. 13: 542-546); and oleic acid, polyethylene glycol and propylene glycol (Singh et al, 1996, Pharmazie 51: 741-744) are known to improve skin penetration of an active ingredient. [0213] For some applications, it is preferable to administer a long acting form of cell-death facilitating agent using formulations known in the art, such as polymers.
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