Comparison of methods for visualizing blood on dark surfaces

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Presentation transcript:

Comparison of methods for visualizing blood on dark surfaces Jonathan Finnis, Jennie Lewis, Andrew Davidson Science and Justice Volume 53, Issue 2, Pages 178-186 (June 2013) DOI: 10.1016/j.scijus.2012.09.001 Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 1 Fluorescin, Hemascein and Bluestar applied to dilute blood on black cotton. (A: 1 in 20 fluorescin, 0.2% xanthan gum applied to 1 in 100 blood, B: Hemascein applied to 1 in 100 blood, C: Bluestar applied to 1 in 1000 blood). Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 2 Hydrogen peroxide applied to blood on black cotton. (A: 6% hydrogen peroxide applied to neat blood, B: 6% hydrogen peroxide applied to 1:10 blood). Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 3 IR photography of blood on black cotton. (A: neat blood, B: 1:10 blood). Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 4 Blood on leather. (A: IR photograph of blood on leather, B: hydrogen peroxide applied to A). Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 5 Blood on black cotton and vinyl. (A: IR photograph of blood on cotton, B: blood on vinyl, C: IR photograph of B). Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 6 Mean concentration of DNA recovered from bloodstains after method application; standard deviations included. Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 7 Average heterozygous peak heights from profiles generated from bloodstains after method application; standard deviations included. Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 8 Mean concentration of DNA recovered from neat bloodstains, 0 and 30 days after method application; standard deviations included. Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 9 Average heterozygous peak heights from profiles generated from neat bloodstains, 0 and 30 days after method application; standard deviations included. Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions

Fig. 10 Dried bloodstains after hydrogen peroxide application on leather. Science and Justice 2013 53, 178-186DOI: (10.1016/j.scijus.2012.09.001) Copyright © 2012 Forensic Science Society Terms and Conditions