Mistry Sanchita, Chatterjee Madhumati, Ghosh Jyoti Ratan, Chakrabarti Nirmal Kanti, Bandyopadhyay Arup Ratan
Department of Anthropology, Sree Chaitanya College, Habra, 24 Parganas (N), West Bengal, India.
Anthropol Anz. 2012;69(1):117-25. doi: 10.1127/0003-5548/2011/0119.
Hair examinations and comparisons conducted by forensic scientists often provide investigative and associative information. Apart from its length and its natural color, hair displays a morphologic diversity both macroscopically and microscopically. Pseudogenization of <phihHaA type I hair keratin gene inactivation highlights dramatic differences and is thought to be one of the strongest reasons for localization of hair in human. Therefore, humans have several different types of hair that can be classified depending on their body position and form. Size, angle of penetrance through the skin, embryological time of first appearance, and structural variations in the hair follicles are all taken into account when classifying hair types. However, the classification of differential types of hair quantitative traits in human is yet to be undertaken. An attempt has been made in the present study to understand the variation by using the histomorphological and quantitative variables of 540 hair strands (180 each scalp, axillary and pubic hair) of 18 adult Bengalee Hindu caste females. Apart from variation in histomorphological variables, quantitative variables regarding shaft and medulla diameter demonstrated variation in terms of being significantly higher (p < 0.05) in pubic hair compared to that of axillary and scalp hair. Therefore, the present study envisaged that variability in histomorphological and quantitative traits in different areas of human could be one of the important criteria for personal identification in forensic research.
法医科学家进行的毛发检查和比对常常能提供调查及关联信息。除了毛发的长度和自然颜色外，其在宏观和微观层面都呈现出形态学上的多样性。I型毛发角蛋白基因失活的假基因化突出了显著差异，被认为是毛发在人类身体上定位的最主要原因之一。因此，人类有几种不同类型的毛发，可根据其在身体上的位置和形态进行分类。在对毛发类型进行分类时，会考虑毛发的大小、穿透皮肤的角度、首次出现的胚胎学时间以及毛囊的结构变化。然而，对人类不同类型毛发数量性状的分类尚未开展。本研究试图通过对18名成年孟加拉印度教种姓女性的540缕毛发（头皮、腋毛和阴毛各180缕）进行组织形态学和定量变量分析来了解其中的差异。除了组织形态学变量存在差异外，关于毛干和髓质直径的定量变量显示，阴毛的这些变量显著高于（p < 0.05）腋毛和头皮毛发。因此，本研究设想，人类不同部位毛发在组织形态学和数量性状上的变异性可能是法医研究中个人识别的重要标准之一。
