| http://www.w3.org/ns/prov#value | - If desired, additional tubular passageways 54 can be provided in outer cover 44 for directing CO2 gas or other fluid from a suitable source located in or adjacent to remove unit R through tip 36 to the desired site in the body cavity to blow away or wash away body fluids such as blood so that the particular area of the site to be viewed can be seen.
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