Examinando por Autor "Torres Zamudio, Susan Melody"

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Acceso abierto
Cortical Trichological Characterization by Forensic Histotechnology
(Universidad Privada Norbert Wiener, 1905-07-09) Torres Zamudio, Susan Melody; Villavicencio Rafael, Andy Anderson; Ascarza Gallegos, Justo Angelo
The forensic importance of the cortex lies in the presence of pigment granules, which will serve as points of comparison for clarifying a criminal act. Therefore, the objective of this study was to characterize cortical trichology using forensic histotechnology. The study was observational, cross-sectional, and exploratory. The sample consisted of 300 samples, evenly divided: 150 human and 150 animal samples. Cross-sections were performed for analysis. The statistical analysis was done using contingency tables in SPSS. Five criteria were considered in the microscopic evaluation: Pigment Size (pigment granules in human cortex were fine, whereas in animals, they were coarse), Pigment Distribution (pigment granules in humans were peripheral, and in animals, central), Cortical Substance (the cortical substance in humans formed a thick cuff, while in animals, it was a hollow cylinder), Tonality (dark-toned pigments were granular, brownish pigments were diffuse, and grayish tones had no pigment), and Region of Origin (head hair was circular/oval with a narrow and central medulla, while pubic hair had an elliptical/irregular shape with an eccentric medulla). It is concluded that it is possible to characterize trichology based on pigment size, pigment distribution, cortical substance, tonality, and region of origin using the cortex and its elements.