| http://www.w3.org/ns/prov#value | - Patent US20040191765 - Label-free evanescent-field detection of biological and chemical agents - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsAn evanescent-field sensor system and method of using the system to detect either liquid- or airborne biological pathogens, chemical agents, and other harmful or toxic species is provided.
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