| http://www.w3.org/ns/prov#value | - After coaxial tube 14 is fully withdrawn, pusherdisc 24 and rod 26 are withdrawn to produce the view of FIG. 3.Plug 22 is formed of a material that expands upon contact with a stimulant such as water, blood, air, visible light or other electromagnetic radiation such as a laser beam, a preselected chemical, and so on.
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