| http://www.w3.org/ns/prov#value | - aving a proximal extremity disposed in said recess and being capable of penetrating the diaphragm of the vacuum container to couple the evacuated space to the flow passage of the needle means to supply a subambient pressure to the distal extremity of the needle means, an on-off mechanism carried by the adapter including a member mounted in the recess for axial movement in the recess and engaged by
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