Different molecular forms of uncomplexed prostate specific antigen (PSA) show similar immunoreactivities.


PSA exists in multiple molecular forms in serum, with the majority complexed to proteinase inhibitors such as alpha 1-antichymotrypsin and alpha 2-macroglobulin. The uncomplexed, or "free" forms of PSA represent a very heterogenous distribution of molecular isoforms. It has been suggested that these variations in uncomplexed PSA may cause differences in… (More)


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