| http://www.w3.org/ns/prov#value | - between the retracted position and an extended position at which the tip of the needle extends from the needle end; and means for maintaining the needle gasket in the extended position, said maintaining means including a dissolvable portion wedgeable between the tip of the needle gasket and the needle end of the barrel, the dissolvable portion configured to retain the tip of the needle gasket near
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