| http://www.w3.org/ns/prov#value | - On such occasions, it becomes necessary to introduce various surgical or bioptic instruments into the body cavity, e.g., instruments such as forceps, high frequency instruments, catheters etc., for instance, for removal of diseased portions, for coagulative treatments on bleeding spots or for medicinal or anaesthetic injections, or for the purpose of sampling tissues from intracavitary walls.
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