| http://www.w3.org/ns/prov#value | - PSA is a protein produced by cells of the prostate gland, which is measured against a man???s blood in the test.See video: Stephen Colbert on ???Today??? Costumes: ???Where in the World Is Matt Lauer???s Dignity????Next up was Roker, whose prostate was a little enlarged, but ???not terrible,??? Dr. Samadi said.
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