‘Touch’ or trace cell mixtures submitted as evidence are a significant problem for forensic laboratories as they can render resulting genetic profiles difficult or even impossible to interpret. Optical signatures that distinguish epidermal cell populations from different contributors could facilitate the physical separation of mixture components prior to genetic analysis, and potentially the downstream production of single source profiles and/or simplified mixtures. For this dataset, optical properties including forwards scatter (FSC), side scatter (SSC), and fluorescence emissions in the Allophycocyanin (APC) channel were measured in epithelial cell populations from touch samples collected from several different contributors on multiple days to assess inter- and intra-contributor variability.
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