prostate-specific antigen meaning

[Medicine]
A glycoprotein that is a kallikrein-like serine proteinase and an esterase,produced by epithelial cells of both normal and malignant prostate tissue. It is an important marker for the diagnosis of prostate cancer.n : a protease that is secreted by the epithelial cells of the prostate and is used in the diagnosis of prostate cancer since its concentration in the blood serum tends to be proportional to the clinical stage of the disease —abbr. PSA

• prostate specific antigen:    Noun: prostate spe ...
• prostate specific kallikrein:    [Medicine]A family ...
• tissue-specific antigen:     noun (immunology) ...