巻号一覧
50 巻 (1973 - 1974)
- 6 号 p. 345-
- 5 号 p. 273-
- 4 号 p. 207-
- 2-3 号 p. 91-
- 1 号 p. 1-
50 巻, 2-3 号
選択された号の論文の5件中1～5を表示しています
- |<
- <
- 1
- >
- >|
-
Shozo Matano, Toru Hiura, Yoshio Shigenaga, Akira Sakai1973 年 50 巻 2-3 号 p. 91-105
発行日: 1973/08/25
公開日: 2012/09/24
ジャーナル フリー1. The terminations of the primary trigeminal fibers were studied using Fink-Heimer technique in the rat. 2. Primary trigeminal afferents terminated in the superior and spinal trigeminal nuclei. In three layers of the spinal nucleus (the zonal, gelatinous and proper), no difference of the terminal density was recognized. Terminations to the reticular formation were found in a narrow portion of the lateral reticular formation along the column of the spinal nucleus. At the level of the motor trigeminal nucleus, the presynaptic terminals were recognized in the dorsomedial portion to the superior nucleus. There was no termination in the medial part of the reticular formation, nor terminals in the sensory trigeminal nucleus of the opposite side. A fiber boundle arise d from the mandibular subdivision terminated to the most rostral portion of the solitary nucleus. 3. The topographical organization in the trigeminal nucleus was placed with the dorsoventral direction. The mandibular subdivision occupied the most dorsally, the maxillar occupied the middle and the ophthalmic occupied the most ventrally. The mandibular and maxillar subdivisions took up very large area compared with the ophthalmic one. The same pattern as the dorsoventral direction in the trigeminal nuclei was found in the terminal area of the reticular formation neighbouring with the trigeminal nuclei. 4. In the rat, the above-mention e d topographical localization of the primary fibers did not clearly correspond to the terminal pattern . of the corticofugal fibers from S I and S II face areas reported in the previous paper. 5. It was suggested that cells of a peculiar type in the semilunar ganglion supply their axons to the solitary nucleus via the primary trigeminal nerve in order to conduct the gustatory impulse.抄録全体を表示PDF形式でダウンロード (2224K) -
Electron Microscopic ObservationKiichiro Saito, Hellen Bruppacher1973 年 50 巻 2-3 号 p. 107-114
発行日: 1973/08/25
公開日: 2012/09/24
ジャーナル フリーPDF形式でダウンロード (1908K) -
Tadao Kirino, Tetuo Nozue, Motohiko Inoue1973 年 50 巻 2-3 号 p. 117-131
発行日: 1973/08/25
公開日: 2012/09/24
ジャーナル フリー(1) Pregnant mice were i njected with mitomycin C intraperitoneally on the 11th,12th,13th and 14th days of pregnancy at the dosage of 7.5 mg/Kg. The fetuses in which congenital anomaly was recognized in the tooth germ were 61 percent of the total of 807 fetuses. (2) The conical-shaped dental epithelium splitted into two lobes on the buccal and lingual side, was produced in the fetuses of the. mother mice injected on the 11th and 12th day of gestation. (3) The bud-shaped dental epithelium splitting into two lobes on the buccal and lingual side was brought to the fetuses of the mother mice injected at the 11th,12th and 13th days of pregnancy, and the appearance-frequency of this figure was the largest percentage in the anomalous tooth germ. (4) The defective cap-formed enamel organ lacking the enamel knot was seen in the fetuses of mice injected on the 13th and 14th day of pregnancy. In this sample, cell death was recognized conspicuously in the dental papilla and in the mesenchyme of the apical ectodermal ridge, where it was not present in normal development. (5) In the tooth germ lacking the enamel knot, mitosis was hardly seen and cell modifications were recognized, and the globular cells decreased in number, especially in the mesenchyme, compared with control specimens. (6) Even though the enamel knot and the cell mass were not present in the dental epithelium, the specific spindle cells were recogni zed at certain places in the dental epithelium and in the futu re dental papilla (including the dental papilla). As the case may be, whe n the cell mass were present, specific spindle cells were not in the den tal epithelium, but in the dental papilla. (7) The subsequent dev e l opment in the tooth germ lacking the enamel knot was interrupted.抄録全体を表示PDF形式でダウンロード (3346K) -
Takao Tokioka1973 年 50 巻 2-3 号 p. 133-182
発行日: 1973/08/25
公開日: 2012/09/24
ジャーナル フリーPDF形式でダウンロード (13246K) -
Tetuo Nozue, Tadao Kirino1973 年 50 巻 2-3 号 p. 183-205
発行日: 1973/08/25
公開日: 2012/09/24
ジャーナル フリー(1) The specific spindle ce l ls treated with mitomycin C were not stained with hematoxylin and eosin, and were transparent, and their nucleoli were hardly recognizable. They were distinguishable clearly among the other cells. They were negative to the Feulgen reaction, and they were not stained with naphthol yellow S stain and fast green FCF stain. With azur B stain, their nucleoli were hardly stainable. (2) The specific spindle cells were present not only i n the tooth germ but also in the following tissues. (a) Nervous tissue. On the 9th and 10th gestation days the specific spindle cells were present in the neural crest. After the 11th gestation day they were present in the root of the spinal cord, in the spinal ganglia, and in the sympathetic ganglia. They were scattered in the sympathetic nerves, in the spinal nerves, in ccertain cranial nerves, and further in certain cranial ganglia (in ophthalmic, maxillary and mandibular nerves, and semilunar ganglion, jugular ganglion, and superior ganglion). With the advance in stage the specific spindle cells in the above tissues decreased in number. (b) Epithelium and mesenchy m e. In the trunk ; in the ectoderm composed of one or two cell layers in the trunk, the specific spindle cells were situated parallel to the body surface and they were scattered in the sparse mesenchyme. In the cranial part ; the specific spindle cells were present in the epithelium thickened locally organized by several cell layers, in the underlying mesenchyme, and in the boundaries between the epithelium thickened locally and the mesenchyme. Further, they were present in the epithelium composed of two or three cell layers and in the underlying mesenchyme, and further they were present beneath the epithelial cell layers and parallel to it. (c) Others. The specific spindle cells were present in the mesenchyme adjacent to the neural crest and along the dorsal aorta on the 9th and 10th gestation days. They were present in the meninges on the 11th and 12th gestation days. Besides, the specific spindle cells were recognized in the retina, epithelium of lens, perichondrium, mesenteries, and coelomic linings, and further they were present along the blood vessels in the mesenchyme. (3) On the basis of availa b le evidence, it seems likely that the specific spindle cells are the neural crest cells.抄録全体を表示PDF形式でダウンロード (7832K)
- |<
- <
- 1
- >
- >|