| http://www.w3.org/ns/prov#value | - Although International Patent Publication No. WO 98/06346 does mention that the clip-type tissue markers disclosed therein may be ???biodegradable??? such publication provides no information as to what materials could be used to form such a ???biodegradable??? tissue marker or the preferred time period in which the tissue marker is to remain present (i.e., non-degraded and visible) at the biopsy s
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