アブストラクト（2巻1号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Morphogenesis of the Sulcus of the Molar in Rat I. Necrobiotic territories in morphogenesis of the hand
Subtitle　：
Authors　： Yukiko Ookubo, Hironori Kitamura
Authors（kana）　：
Organization　： Department of Oral Histology, Kanagawa Dental College
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 2
Number　： 1
Page　： 23-30
Year/Month　： 1974 / 3
Article　： Report
Publisher　： Kanagawa Odontological Society
Abstract　： Necrobiosis, a physiologic degeneration, takes place in many parts of the body. It occurs very remarkably in the digit formation. However, no report has been published as to necrobiosis for sulcus formation in morphogenesis of the molar. For this reason necrobiosis for digital formation of the rat embryos ranged in age from 14 to 19 days was examined for preliminary study of morphogenesis of the intercuspal valleys in the molar. Mitoses took place not only in the tip ectoderm of the digit but in the interdigital area. Necrobioses were observed not only in the ectoderm but in the mesenchyme of the interdigital area. No degenerative aspect was seen in the tip ectoderm of the digit except for a very slight degeneration which took plac temporally at the 15-day stage.
Practice　： Dentistry
Keywords　： Necrbiosis, Embryology, Rat