| http://www.w3.org/ns/prov#value | - It may be found in an increased amount in the blood of men who have prostate cancer, benign prostatic hyperplasia, or infection or inflammation of the prostate. prostate-specific antigen (PSA) test A prostate-specific antigen test is a blood test that measures the level of prostate-specific antigen (PSA), a substance produced by the prostate and some other tissues in the body.
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