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- Title
表皮内汗腺导管螺旋走行的形态学特征.
- Authors
王有民; 解晓慧; 曹吉明; 李彦霖; 梁 娜; 柳菁莹
- Abstract
Objective To observe the morphological features of sweat gland ducts on their spirals piercing through the epidermis with the relevant data being measured and analyzed plus the infl uencing factors discussed. Methods Six samples of fi nger pulp were respectively cut from the thumb, index or middle fi nger of the left and/or right hands of two young-ormiddle- aged (uncertain of their exact age) male cadavers that were fi xed with formalin solution. More than 300 HE-stained sections were made from the cut fi nger pulp, with 16 eligible ones selected through optical microscope for observation under digital microscope to measure those spiral-stretching sweat gland ducts and analysis of the obtained data. Results The passage of sweat gland ducts in epidermis is of the size-irregular spiral whose average measurement is of 613.50μm in length and the 61.65μm in diameter ranging mostly among 51.15~71.45μm. The spiral goes between 7~9 cycles, with averaging 81.08μm of its pitch ranging across 65.33~96.07μm. The average diameter of the sweat gland duct is 16.20μm, most falling into 12.2~20.25μm. Conclusions The spiral of sweat gland duct in epidermis stretches out with certain regularity, thereby resulting in its length, diameter, number of circles and pitch all changing within a certain range together with the duct’s diameter. To some extent, the characteristic spiral affects the relevant sweat pore on its position and size, potential to underlie the research and identifi cation of the 3rd level characteristics of fi ngerprint.
- Publication
Forensic Science & Technology, 2020, Vol 45, Issue 3, p270
- ISSN
1008-3650
- Publication type
Article
- DOI
10.16467/j.1008-3650.2020.03.012