Subtyping of group specific component (GC) in human semen, blood and vaginal fluid by isoelectric focusing in immobilized ph gradients

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Abstract
The group specific component (GC) is stable and well suited for forensic casework. Isoelectric focusing of common GC variants from semen, seminal fluid, vaginal fluid and semen stains, on Immobiline DryPlates, pH 4.5–5.4, is of practical value in criminal investigations of sexual deliquencies. GC is present in normospermia and azoospermia seminal fluids and found in about 20 % of the vaginal secretions. The GC patterns observed were similar and in accordance with the bands of the individual GC type in plasma/serum.