| http://www.w3.org/ns/prov#value | - A plethysmograph system comprising:a base; a lid, the base and the lid defining a substantially air-tight chamber when the lid is positioned upon the base; a sealing assembly for providing an air-tight seal about a tube, said sealing assembly including first and second sealing members, one of said sealing members being secured to said base, the other of said sealing members being secured to said l
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