| http://www.w3.org/ns/prov#value | - In another example of these embodiments, a sample such as a water sample or a food product or ingredient can be assessed by using an apparatus described herein to assess the sample directly, or a fluid with which the sample is contacted, for the presence of a pathogen which, if ingested by a subject, would contribute to the likelihood that the subject would develop a disease or other condition.
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