Research on DNA and morphological analysis of the ancient brain and human skeleton

1.用透射电镜和扫描电镜对弥生人和江户人的部分脑组织进行了解剖和观察。脑组织由髓鞘网状结构组成。这表明古代大脑是通过相对难以溶解的脂蛋白的存在而保存下来的。2.山阴地区古代人的形态人类学研究建立了山阴地区出土的古代人类骨骼数据库。对青崖上寺遗址的部分标本进行了复原。对标本进行拍照和测量，然后与日本其他地区的标本进行比较。青屋神地遗址的骨架虽然被认为是弥生移民，但其中一些人与九州北方的移民不同。统计分析表明，青矢上寺地人与朝鲜礼安里人相似。3.古脑和江户人的DNA分析从30个人骨碎片的9个标本中提取线粒体DNA，进行单倍型分析。大多数是D4，但也有一些是F。这表明青矢上地人不是一个简单的族群，而是一个复杂的族群。线粒体DNA是从江户人的大脑中获得的，但不是从青坂神智弥生的大脑中获得的。

1.Microscopic analysis of ancient brainsParts of the brain of Yayoi and Edo people were dissected and observed by transmission and scanning electron microscopy. The brain tissues were composed of networks of myelin sheath. This indicates that the ancient brains were preserved by the presence of lipoproteins which are relatively difficult to be dissolved.2.Morphological anthropological study of Ancient people in Sanin districtData base of the ancient human skeletons excavated from Sanin district was made. A part of the specimens including bones from Aoyakamijichi Site were reconstructed. Specimens were photographed and measured followed by a comparison with those in other district of Japan. Although the skeleton of Aoyakamijichi Site were considered to be a Yayoi-immigrant people, some of them were different with immigrant people in northern part of Kyushu. Statistical analysis showed that Aoyakamijichi people resembles with Reianri people of Korea.3.DNA analysis of ancient brains and skeletonMitochondrial DNA was obtained from Yayoi-Aoyakamijichi skeletons and Edo human brains. Mitochondrial DNA was extracted from 9 specimens of 30 human bone fragments followed by the decision of haplotype. Most of them were D4, but some were F. This indicates that Aoyakamijichi peoples were not a simple group but were complex one. Mitochondrial DNA was obtained from Edo human brains, but not from Yayoi Aoyakamijichi human brains.