| http://www.w3.org/ns/prov#value | - Compartment 13, as seen in FIG. 1B, in one embodiment is a means for containing an agent 16 that is soluble in an external fluid and exhibits an osmotic pressure gradient across laminate 12 against an external fluid, or compartment 13 can contain a mixture of agents 16 with at least one agent exhibiting an osmotic pressure gradient.
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