Direct amplification of STRs from blood or buccal cell samples Dennis Y. Wang, Chien-Wei Chang, Nicola J. Oldroyd, Lori K. Hennessy  Forensic Science International: Genetics Supplement Series  Volume 2, Issue 1, Pages 113-114 (December 2009) DOI: 10.1016/j.fsigss.2009.08.069 Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions

Fig. 1 (A) STR profiles generated using the Identifiler chemistry and 1.2mm purified FTA® discs. (B–D) STR profiles generated using the Identifiler Direct chemistry and unpurified FTA® discs. The STR profiles worsen as the size of the FTA® disc increases. Forensic Science International: Genetics Supplement Series 2009 2, 113-114DOI: (10.1016/j.fsigss.2009.08.069) Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions

Fig. 2 (A) Positions of the FTA® discs used in the study. (B) Comparison of the STR profile average peak heights relative to the position of the FTA® disc taken from the bloodstain. Three different blood samples (A, B, and C) were used and two replicates for each sample were performed. Forensic Science International: Genetics Supplement Series 2009 2, 113-114DOI: (10.1016/j.fsigss.2009.08.069) Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions