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笔者以105岁、81岁、70岁、50岁、33岁和22岁等六个不同年龄的人的头发(为了充分具有可比性,头发均取自百会穴),经过扫描电子显微镜制样的常规处理,即所用之头发皆取其毛干部分,酒精洗过并干燥后,用光学树脂贴于铜片上,真空喷金,用Dx—3型国产扫描电子显微镜,以同一放大倍数拍成照片,进行分析。电子显微镜下可见105岁的高龄者头发毛干表面,其毛小皮的排列比较松,毛小皮与毛小皮的游离缘间距也较大。毛小皮的游离缘呈不整齐的钝尖状突起。81岁老人其头
The authors used hairs of six different ages (105, 81, 70, 50, 33, and 22 years old) (for full comparability, the hairs were taken from Baihui) and were prepared by scanning electron microscopy. The conventional treatment, ie, the hairs used are taken from the hair shaft, washed with alcohol and dried, and then affixed with an optical resin to the copper sheet. The gold is vacuum-sprayed and photographed with a Dx-3 type domestic scanning electron microscope at the same magnification. Photos for analysis. Under the electron microscope, the 105-year old hair shaft on the surface of the hair of the elderly had a small arrangement of hairy skin, and a large distance between the free edges of the hair skin and the hair skin. The free edges of the hair follicles are irregularly blunt. 81 year old man with its head