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These are some papers on PCR amplification from blood and tissue directly.I hope it will be helpful for you.
1.Panaccio M and Lew A.PCR based diagnosis in the presence of 8%(V/V) blood.Nucleic Acids Res,1991,19,1151.
2.Panaccio M,Georgesz M and Lew A.FoLT PCR:A simple PCR protocol for amplifying DNA directly from whole blood.Biotechniques,1993,14,238-243.
3.Michael Panaccio, Michael Georgesz, Catherine Hollywell and Andrew Lewl.Direct PCR from solid tissues without DNA extraction.4656 Nucleic Acids Research, 1993, Vol. 21, No. 19