prostate specific antigen
pros·ta·tes·pecificantigen
noun
1.
a protein manufactured exclusively by the prostate gland; PSA is produced for the ejaculate where it liquifies the semen and allows sperm cells to swim freely; elevated levels of PSA in blood serum are associated with benign prostatic hyperplasia and prostate cancer
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WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.