What Is Prostate-Specific Antigen? Your prostate is a gland that makes seminal fluid, which nourishes and transports your sperm when you ejaculate. It's about the size of a walnut and surrounds your ...
There are few medical questions that cause so much argument as whether or not men should be screened for prostate cancer using the PSA (prostate specific antigen) blood test. Looking at previous ...
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