| http://www.w3.org/ns/prov#value | - such a manner as to alternately change the pressure in the bore portion 52 between a first pressure P1 lower than atmospheric pressure and a second pressure P2 higher than the first pressure P1. [0577] By setting the pressure pattern in the bore portion 52 as described above, it is possible to certainly sample an amount, necessary and adequate for measurement, of blood for a short time. [0578] Th
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