Cytobiologie最新文献_第8页

Differences of nuclear and cytoplasmic laser-induced fluorescence in Drosophila salivary gland cells. 果蝇唾液腺细胞激光诱导细胞核和细胞质荧光的差异。

Cytobiologie Pub Date : 1978-06-01

L Rensing, J Behnel, G Marowsky

引用次数: 0

5-HT effect and the control of the relaxation of a molluscan smooth muscle (ABRM) of Mytilus edulis L. 5-HT效应及其对贻贝平滑肌松弛的控制。

Cytobiologie Pub Date : 1978-06-01

J Gilloteaux

引用次数: 0

Protoplasts from Acetabularia: isolation and fusion. 髋臼原生质体的分离与融合。

Cytobiologie Pub Date : 1978-04-01

M Primke, S Berger, H G Schweiger

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Microtubules and organelle movements in the rust fungus Uromyces phaseoli var. vignae. 微管和细胞器在锈菌中运动。

Cytobiologie Pub Date : 1978-04-01

I B Heath, M C Heath

{"title":"Microtubules and organelle movements in the rust fungus Uromyces phaseoli var. vignae.","authors":"I B Heath, M C Heath","doi":"","DOIUrl":"","url":null,"abstract":"Direct visual observation and time lapse films of in vitro differentiating infection structures of the cowpea rust fungus Uromyces phaseoli var. vignae revealed three categories of movement: a) general movement of cytoplasm, plus organelles, into the developing portions of the fungus during which the nuclei, in particular, maintained their characteristic position with remarkable constancy, b) relatively slow movements of various organelles such that they became displaced relative to one another and to the growing fungal tip, and c) erratic, rapid, saltations of small organelles over short distances. Serial section ultrastructural analysis showed that microtubules were typically orientated parallel to the direction of cytoplasm migration. Simple statistical analyses showed that the microtubules were non-randomly associated with mitochondria but only rarely associated with lipid droplets or microbodies. All microtubules were typically short (less than 2 micrometer) and, in various parts of the cell, were often intimately associated with 3 to 6 nm diameter filaments of unidentified material. Interphase nuclei characteristically lacked microtubules emanating from their variously laterally or posteriorly located NAOs (nucleus associated organelle) but were associated with groups of laterally placed microtubules. The correlations between the observed types of movement and the ultrastructure of the cells discussed in terms of various models for organelle motility.","PeriodicalId":75770,"journal":{"name":"Cytobiologie","volume":"16 3","pages":"393-411"},"PeriodicalIF":0.0,"publicationDate":"1978-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11850754","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

Dextran T 500--induction of spreading in Ehrlich ascites tumour cells on glass surface. 右旋糖酐t500——诱导埃利希腹水肿瘤细胞在玻璃表面扩散。

Cytobiologie Pub Date : 1978-04-01

J Cieślak, W Korohoda

引用次数: 0

The genes for 5 S ribosomal RNA and transfer RNA in Tetrahymena pyriformis. 梨状四膜虫5s核糖体RNA和转移RNA基因。

Cytobiologie Pub Date : 1978-04-01

T Tønnesen

引用次数: 0

Structure and ribonucleoprotein staining of kinetochores of colchicine-treated HeLa cells. 秋水仙碱处理的HeLa细胞着丝点结构及核糖核蛋白染色。

Cytobiologie Pub Date : 1978-04-01

E Bielek

引用次数: 0

DNA characterization, satellite DNA localization, and nuclear organization in Tropaeolum majus. 大对流层的DNA特征、卫星DNA定位和核组织。

Cytobiologie Pub Date : 1978-04-01

B Deumling, W Nagl

引用次数: 0

Crystalloid bodies in Euglena. Euglena的结晶体。

Cytobiologie Pub Date : 1978-04-01

E Marcenko

引用次数: 0

[Ultrastructural and chemical study of the chromatin during spermiogenesis of the fish Scyliorhinus caniculus (L.) (author's transl)]. [Scyliorhinus caniculus (L.)鱼精子发生过程中染色质的超微结构和化学研究]。

Cytobiologie Pub Date : 1978-04-01

M Gusse, P Chevaillier

{"title":"[Ultrastructural and chemical study of the chromatin during spermiogenesis of the fish Scyliorhinus caniculus (L.) (author's transl)].","authors":"M Gusse, P Chevaillier","doi":"","DOIUrl":"","url":null,"abstract":"Electron microscopic, cytochemical and biochemical techniques were applied to study structural aspects and changes in nuclear components during the spermiogenesis of Scyliorhinus caniculus. Five major stages of nuclear differentiation were recognized and characterized by variations in the organization and chemical properties of chromatin. Stage I is analogous to a somatic nucleus with heterogeneous chromatin. At the second stage, the nuclear content is dispersed but the chromatin fibers are of the same diameter as those of the stage I. The nuclear elongation begins at stage III, the DNP fibers running preferentially parallel to the long axis of the nucleus. During these early modifications of chromatin structure appear two new basic nuclear proteins (S 1 and S 2) which migrate faster than histones but typical histones remain assosciated with these nuclei. In later elongation stage (stage IV), the chromatin fibers organize in a helical form and fuse side by side giving lamellar systems which have a reticular structure. At the end of this stage, the nuclear material has become uniformly compact. These late variations in chromatin organization are parallel to the association of chromatin with new basic nuclear proteins (S 3, S 4, Z 1, Z 2 and Z 3). The cytochemical and electrophoretical properties of one of these proteins (S 4) which appears at the end of spermiogenesis are similar to those of a protamine. In stage V, the chromatin is homogeneous and the nucleus assumes a helical configuration beginning at the posterior end. The deoxyribonucleoproteins of the mature sperm show some novel chemical characters, including the appearance of a stable nuclear acidophilia with the ALFERT and GESCHWIND method and extraction with 0.25 N HCl of one of the basic protein fractions newly appeared in late spermiogenesis (Z 3), two other fractions (Z 1 and Z 2) being extracted with a more drastic procedure. The other fractions described before are no more detectable.","PeriodicalId":75770,"journal":{"name":"Cytobiologie","volume":"16 3","pages":"421-43"},"PeriodicalIF":0.0,"publicationDate":"1978-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11850756","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