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Scat hair presents a diverse profile of hairs for morphological assessment that may find versatile applications in wildlife forensic investigations. Successful morphological assessment of scat hair microstructure, however, depends on a robust sectioning methodology. We assessed the feasibility and efficacy of a cryosectioning technique compared to that of a gold standard hand-sectioning technique. Scat hairs were embedded in paraffin wax and hand-sectioned, while cryopreserved scat hairs were sectioned with a cryostat. The results showed that cryosectioning preserved the pristine morphology of the scat hair and provided cross sections more amenable to high-resolution imaging of hair internal microstructure than hand-sectioning. The cryosectioning technique may find novel applications as a more reliable and robust technique to aid (i) scat hair internal microstructure analysis for cross-referencing with species identification keys in wildlife forensic studies and (ii) downstream toxicological analysis in wildlife forensic studies as hair biochemistry is not altered during cryopreservation.
This article was published in the following journal.
Name: Journal of forensic sciences
The incidence of hair loss among Chinese male has increased to 21.3 per hundred. Hair restoration has been an effective technique. Detailed hair distribution has a tremendous impact on the surgery des...
The detection of cannabis constituents and metabolites in hair is an established procedure to provide evidence of exposure to cannabis. We present the first known evidence to suggest that applying hem...
Gamma-hydroxybutyric acid (GHB) is a short-chain fatty acid used recreationally as a drug of abuse due its strong suppressive effect on the central nervous system. The detection window of GHB in blood...
Sensory hair cells are mechanoreceptors found in the inner ear that are required for hearing and balance. Hair cells are activated in response to sensory stimuli that mechanically deflect apical protr...
Hair-straightening treatments may involve the use of thermal devices, which potentially cause damages in the cuticle and cortex of the hair fibers. Particularly, the heat causes denaturation of the α...
The purpose of this study is to compare the effectiveness, complications and benefits of Hair Apposition Technique(HAT)performed by nurses or doctors.
Hair samples from subjects on antiretroviral therapy, both HIV- and HIV+ patients with HIV RNA 6 months will be analyzed to investigate the influence of race, hair color and hair treatment...
The objective of this study is to assess the performance of Hair Up on female pattern hair shedding and regrowth. 58 adult female patients suffering from hair loss will be evaluated in a s...
The purpose of this study is to learn more about how hair removal with lasers achieves, what appears to be, permanent hair reduction. Laser hair removal has become one of the most popular...
The purpose of this research study is to better understand African American hair and scalp, its biologic appearance and how this relates to African Americans' perceptions of their hair and...
Hair grooming and cleansing aids or other products meant for topical application to hair, usually human. They include sprays, bleaches, conditioners, rinses, shampoos, nutrient lotions, etc.
Auditory sensory cells of organ of Corti, usually placed in one row medially to the core of spongy bone (the modiolus). Inner hair cells are in fewer numbers than the OUTER AUDITORY HAIR CELLS, and their stereocilia are approximately twice as thick as those of the outer hair cells.
Sensory cells in the organ of Corti, characterized by their apical stereocilia (hair-like projections). The inner and outer hair cells, as defined by their proximity to the core of spongy bone (the modiolus), change morphologically along the cochlea. Towards the cochlear apex, the length of hair cell bodies and their apical stereocilia increase, allowing differential responses to various frequencies of sound.
Chemicals that are used to oxidize pigments in HAIR.
Methods used to remove unwanted facial and body hair.