Anatomischer Anzeiger最新文献

Staining with Ziehl's fuchsin of semithin sections mounted on slides. 用齐氏品红染色载玻片上的半薄切片。

Anatomischer Anzeiger Pub Date : 1991-01-01

J R Alonso, J Lara, J Aijón

引用次数: 0

Light- and electron-microscopic studies on isolated bovine islets of Langerhans. 朗格汉斯牛胰岛分离体的光镜和电镜研究。

Anatomischer Anzeiger Pub Date : 1991-01-01

S S Ali, M M Ali, B J Hering, R G Bretzel, K Federlin

{"title":"Light- and electron-microscopic studies on isolated bovine islets of Langerhans.","authors":"S S Ali, M M Ali, B J Hering, R G Bretzel, K Federlin","doi":"","DOIUrl":"","url":null,"abstract":"While several recent studies have focussed on the critical assessment of yield, purity and function of isolated islets, fine-structural investigations of isolated islets have been the subject of only a few studies. After intraductal injection of collagenase solution, the distended bovine pancreata were processed in a continuous digestion-filtration device, after which the purification of the islet suspension was accomplished by density gradient centrifugation. Purified islets were then prepared for light- and transmission electron-microscopic analysis. In semithin sections, no evidence of either connective tissue or exocrine tissue surrounding isolated islets was found. Endocrine cells exhibiting cytoplasmic granules were packed in clusters varying in size. In ultrathin sections, A-cells containing numerous secretory granules were distinctive; their cytoplasm contained conspicuous formations of rough endoplasmatic reticulum and juxtanuclear Golgi complexes. In the B-cells, the Golgi complexes were also prominent; these elements, however, were poor in endoplasmic reticulum and displayed characteristic B-cell granules surrounded by a halo. A few ultrastructurally heterogeneous cells were scattered among the identified cellular elements.","PeriodicalId":72195,"journal":{"name":"Anatomischer Anzeiger","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12934776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Fundamentals of the biomechanics of hard tissues]. [硬组织生物力学基础]。

Anatomischer Anzeiger Pub Date : 1991-01-01

V Martinko, M Belay, L Jelínek

引用次数: 0

Elements of a general theory of joints. 6. General kinematical structure of mandibular movements. 关节一般理论的要素。6. 下颌运动的一般运动学结构。

Anatomischer Anzeiger Pub Date : 1991-01-01

H Nägerl, D Kubein-Meesenburg, J Fanghänel, K M Thieme, B Klamt, R Schwestka-Polly

{"title":"Elements of a general theory of joints. 6. General kinematical structure of mandibular movements.","authors":"H Nägerl, D Kubein-Meesenburg, J Fanghänel, K M Thieme, B Klamt, R Schwestka-Polly","doi":"","DOIUrl":"","url":null,"abstract":"Movements of the mandible are recorded in vivo by a measuring system (MT 1602) that takes all 6 degrees of freedom of a rigid body into account. Class-I-patients were asked to move their mandible in the sagittal-vertical plane. The evaluation of the measurements yields an almost plane mandibular movement that only uses 2 degrees of freedom although a general plane movement normally possesses 3 degrees and although the human temporomandibular joint (TMJ) has a certain space of motion. This quantitative reduction of the degrees of freedom by one is produced by a neuro-muscularly guided dimeric link chain that cannot directly be related to anatomical landmarks. The diverse types of mandibular motion of a sound patient differ in the constant ratio of the angular velocities around the 2 axes of the dimeric link chain. Therefore, the paths of the individual mandibular points are epicycloids or hypocycloids. Patients with disorders of the TMJ and the neuromuscular feedback system do no longer show this constancy of the angular velocities' ratio. Besides that, we theoretically derive and empirically prove the fact that common axiographs do not record the \"path of the hinge axis\" of the TMJ, on principle. In this context we discuss some--in dentistry and anatomy widespread--fundamental misconceptions of the rigid body's kinematics.","PeriodicalId":72195,"journal":{"name":"Anatomischer Anzeiger","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12967520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[The razor blade sectioning technique in teratological research]. 【畸形学研究中的刀片切片技术】。

Anatomischer Anzeiger Pub Date : 1991-01-01

M Weber, E Weber

引用次数: 0

[The construction principle of bone. II. Microstructure]. 骨骼的构造原理。2微观结构)。

Anatomischer Anzeiger Pub Date : 1991-01-01

V Martinko, L Jelínek

引用次数: 0

Ultrastructural characteristics of renal corpuscle evolution in vertebrates. 脊椎动物肾小体演化的超微结构特征。

Anatomischer Anzeiger Pub Date : 1991-01-01

E P Melman, L E Kovalchuk, B V Shutka, R N Lotovskaya

引用次数: 0

An ultrastructural and biochemical analysis of the epithelial-mesenchymal interface of the ruminal mucosa during development. 瘤胃黏膜上皮-间质界面发育过程的超微结构和生化分析。

Anatomischer Anzeiger Pub Date : 1991-01-01

J L Arias, M S Fernandez, P Oreste, S Baeza, V Pavez

引用次数: 0

Histomorphometrical aspects of the postnatal development of masticatory muscle in the muscular dystrophic mouse. 肌营养不良小鼠咀嚼肌出生后发育的组织形态学方面。

Anatomischer Anzeiger Pub Date : 1991-01-01

H Vilmann, S Kirkeby

{"title":"Histomorphometrical aspects of the postnatal development of masticatory muscle in the muscular dystrophic mouse.","authors":"H Vilmann, S Kirkeby","doi":"","DOIUrl":"","url":null,"abstract":"Histomorphological and histomorphometrical observations were used to describe the development of masticatory muscles from normal and muscular dystrophic mice. The masseter and the digastric muscle were described from the birth to 35-40 week of age. It has not been possible by histomorphological criteria to separate dystrophic muscles from normal muscles at birth. From 2 weeks onwards marked differences between the affected and unaffected muscles appeared, as the affected fibres from this age are rounded with marked variations in size. Central nucleation is frequent and there is an increased amount of connective tissue between the fibres. The histomorphometrical observations revealed an increase in mean size of the fibres with age, both in normal and dystrophic masticatory muscles. The fibre size variance which has been shown to be a reliable parameter for description of degree of affection of dystrophic muscles, increased with increasing age in both groups. However, the variance is at all ages greater in the dystrophic muscles than in the normal ones, and is always greater in the masseter muscle than in the digastric muscle. There seems to be some small differences between male and female masticatory muscles, whereas no differences could be revealed between muscles from normal and heterozygous animals. Possible explanations of the obvious differences in degree and progression of the disease between the masseter and digastric muscle are proposed.","PeriodicalId":72195,"journal":{"name":"Anatomischer Anzeiger","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13204850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Elements of a general theory of joints. 3. Elements of a theory of synarthrosis; experimental examinations. 关节一般理论的要素。3.联合作用理论的要素;实验考试。

Anatomischer Anzeiger Pub Date : 1991-01-01

H Nägerl, D Kubein-Meesenburg, B Becker, J Fanghänel

引用次数: 0