| Health / Medical Topics |
Particle Count and Size Analyzer
An instrument that measures changes in the electrical resistance of an electrolyte solution produced by suspended nonconductive particles. Changes in resistance determine both the concentration and size distribution of the particles. (NCI Thesaurus)
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The status of a person in relationship to his participation in a given activity.
The period of time during which a participation in activity continues.
The act of taking part in an activity.
A coded value specifying the kind of organizations planned to participate as study sites for an activity.
