By means of isoelectric focusing and immunoblotting the possibility of the determination of HF polymorphism was investigated on dried bloodstains under various storage conditions. The three common phenotypes, HF A, HF AB and HF B, were reliably demonstrable at 37℃ for up to 4 weeks, at room temperature for up to 7 weeks and at 4℃ for over 10 weeks. The results showed that this complement system can provide a quite useful, new means for the identification of unknown stored bloodstains.journal articl
