WITT, Matthias, HEATON, Cameron, KENNEDY, Katie, LANGENBURG, Glenn and FRANCESE, Simona (2021). MALDI imaging of blood and blood provenance in old fingermarks. In: American Society for Mass Spectrometry (ASMS) 2021 Annual Conference, Philadelphia, PA, USA, 31 Oct - 04 Nov 2021. ASMS. (Unpublished)
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Abstract
Reliable confirmation of the presence of blood in stains and marks is crucial to reconstruct the dynamics of a violent crime. MALDI MS Profiling (MALDI MSP) and MALDI MS Imaging (MALDI MSI) have been shown to be suitable confirmatory tests to this effect [1-4]. However, additional and important information is based on the attribution of the source of blood (animal or human), as a few murder cases in the public domain demonstrate. The Fingermark Research Group at Sheffield Hallam University, recently published on the validation of a MALDI MSP method to detect and distinguish between human and animal blood (down to the animal species level) in enhanced blood marks and stains analyzed in a blind fashion [5] (Figure 1). Here we use a combination of bottom-up proteomics and MALDI MSI to visualize blood of bovine or human origin in 4-year-old fingermarks. These are unused marks originating from the batch of blind samples on which the Kennedy et al. publication [5] was based.
Item Type: | Conference or Workshop Item (Poster) |
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SWORD Depositor: | Symplectic Elements |
Depositing User: | Symplectic Elements |
Date Deposited: | 24 Mar 2023 15:47 |
Last Modified: | 24 Mar 2023 17:19 |
URI: | https://shura.shu.ac.uk/id/eprint/30521 |
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