Abstract：
:Triad density relative to sarcomeres, size of T-system tubules, sarcomere length, muscle fiber diameter in native and fixed states, and size of myofibrils were measured in four straited muscle fiber types in Atlantic hagfishes (Myxine glutinosa, L.) of different sizes. Traids occur at A/I-injunctions in all fiber types. The density of traids relative to sarcomeres is higher in "white" than in "red" muscle fibers. The T-tubules show no sign of branching. The area of the T-system tubules is 3-4 times the surface area in 80 mum "white" muscle fibers and 1-2 times that in 60 mum "red" fibers. The size of myofibrils is similar in "white", "intermediate", and "red" fibers of m. parietalis, and constant through a large span of animal size. In "white" fibers, increase in diameter up to 90 mum is accompanied by an increase in the number of myofibrils, not by an increase in the individual size of the myofibrils. Above 90 mum, "white" fibers grow by increasing the amount of intermyofibrillar space. This is reflected by an extensive shrinkage of the thicker "white" fibers during the preparative procedure for electron microscopy, a shrinkage that is limited only by complete packing of the myofibrils. "Red" fibers shrink much less.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Korneliussen H,Nicolaysen Kdoi
10.1007/BF00223227keywords:
subject
Has Abstractpub_date
1975-01-01 00:00:00pages
1-16issue
1eissn
0302-766Xissn
1432-0878journal_volume
157pub_type
杂志文章abstract：:Ten hamsters received repeated injections of 3H-thymidine for 4 days and were allowed to survive for 7, 28, 42 and 100 days. Changes in spatial distribution of the labelled cells and in labelling indices of each cell line in the gastric glands were studied at various days after 3H-thymidine, the labelled parietal cell...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00226025
更新日期：1976-09-14 00:00:00
abstract：:Electron-microscopic evidence indicates that during conditions of high hormone demand such as lactation there is a dramatic reduction in the number of fine glial processes which are normally interposed between magnocellular neuroendocrine cell somata in the supraoptic nucleus (SON). The purpose of this study was to co...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00225557
更新日期：1985-01-01 00:00:00
abstract：:The fine structure of Heterophrys marina (Centrohelidia, Heliozoa) is described with special reference to centroplast structure, morphogenesis and "behavior" of kinetocysts (= axopodial granules which perform saltatory movement), and formation of organic spicules in a new type of organelle located in the plasma membra...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00222116
更新日期：1975-08-01 00:00:00
abstract：:The effects, on the maternal mammary gland, of diets containing similar lipid percentages but differing in composition of polyunsaturated fatty acids (PUFA) have been assessed in rats during pregnancy and lactation. For this purpose, tuna fish oil (an n-3-PUFA-enriched oil) and corn oil (an n-6-PUFA-enriched oil) were...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-012-1523-4
更新日期：2013-03-01 00:00:00
abstract：:The interendothelial junctions of all segments of the renal vasculature have been studied in eight species using the freeze-fracture technique. Three types of junctions have been found. Combinations of tight and gap junction elements are characteristic for interlobular arteries and proximal afferent arterioles. Contin...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00217224
更新日期：1984-01-01 00:00:00
abstract：:Mechanisms underlying the unique survival property of human spiral neurons are yet to be explored. P75 (p75(NTR)) is a low affinity receptor for neurotrophins and is known to interact with Trk receptors to modulate ligand binding and signaling. Up-regulation of this receptor was found to be associated with apoptosis a...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-012-1395-7
更新日期：2012-06-01 00:00:00
abstract：:The responses of non-neuronal cells to the degeneration of neuroblasts were studied in the spinal ganglia of the chick embryo. Reactive changes of the non-neuronal cells were not apparent during the early stage of degeneration of the neuroblast, but during the later stages of degeneration evidence was found suggesting...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00210032
更新日期：1978-06-26 00:00:00
abstract：:Evidence has already been adduced suggesting that an increase in microtubular number occurs in the tractus hypophyseus of rats stressed by the administration of hypertonic saline, and of rats with congenital diabetes insipidus (CDI). Since the tractus hypophyseus in these animals shows high secretory activity, it seem...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219611
更新日期：1976-06-28 00:00:00
abstract：:NdWFamide is an Aplysia cardioexcitatory tri-peptide containing D-tryptophan. To investigate the roles of this peptide, we examined the immunohistochemical distribution of NdWFamide-positive neurons in Aplysia tissues. All the ganglia of the central nervous system (CNS) contained NdWFamide-positive neurons. In particu...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-003-0707-3
更新日期：2003-04-01 00:00:00
abstract：:Adult rat chromaffin cells may proliferate or extend neurites when stimulated by nerve growth factor (NGF) but their response is predominantly proliferative, making them a unique model for studying how mitogenic specificity is achieved. We examined contributions of the NGF receptors trk and p75 and of the major NGF si...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051209
更新日期：1999-01-01 00:00:00
abstract：:The ultrastructural distribution of fibronectin immunoreactivity was investigated in the chicken embryo during late gastrulation. Sites of binding of anti-fibronectin antibodies were ascribed to the basal lamina and associated structures, and to the cell surface. The fibronectin-rich basal lamina was resolved into a l...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00217185
更新日期：1985-01-01 00:00:00
abstract：:Pituitaries from normal, young and adult male rats were fixed either in sublimate-formalin or in glutaraldehyde-osmium. In adjacent Paraplast sections, almost all the gonadotrophs were immunostained with both LH and FSH antisera. The rat LH beta and FSH antisera used were shown to be highly specific by the absorption ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233820
更新日期：1981-01-01 00:00:00
abstract：:Enzymatic activities of calcium-magnesium dependent adenosine triphosphatase (Ca-ATPase) and nonspecific alkaline phosphatase (ALPase) were localized at the initial calcification sites of dentin and enamel of rat incisor teeth using electron-microscopic cytochemistry. Ca-ATPase was localized in the Golgi cisternae, cy...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221856
更新日期：1986-01-01 00:00:00
abstract：:Electron-dense granules (EDGs) are singular structures found in the tissues of several vertebrate and invertebrate organisms. Two types of EDGs were observed in hepatopancreatic cells of the crab Ucides cordatus: (1) a non-mineralized EDG, found mainly inside vacuoles, which reacted positively to acid phosphatase and ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-002-0646-4
更新日期：2003-01-01 00:00:00
abstract：:The distribution of Mg++-ATPase in osteoclasts along the endosteal surface of the chick tibia was investigated by neutral and alkaline pH cytochemical methods at the electron-microscopic level. Reaction product was observed in mitochondria, cytoplasmic vesicles, and ruffled-border membrane. Levamisole, ouabain, and va...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218550
更新日期：1986-01-01 00:00:00
abstract：:The opioid peptide dynorphin A (1-17) is the third transmitter identified in the striatonigral projection, the other two being gamma-aminobutyric acid (GABA) and substance P. The ultrastructural features of the dynorphinergic terminals in substantia nigra/pars reticulata were studied using pre-embedding immunocytochem...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00329443
更新日期：1990-07-01 00:00:00
abstract：:The excretory system of Macrobiotus richtersi consists of one dorsal and two lateral components and shows a high degree of structural complexity. In each of these a tricellular external lobe and a column can be distinguished, the two parts being connected distally. The surface of the lobe cells is increased by deep ba...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00239339
更新日期：1980-01-01 00:00:00
abstract：:This report demonstrates that the administration of testosterone (T) or 11-ketotestosterone (11-KT) to sexually immature (8 wks old) male platyfish (Xiphophorus maculatus) of early- and late-maturing genotypes affects the synthesis and/or release of luteinizing hormone-releasing hormone (LHRH), as assessed by immunocy...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218552
更新日期：1986-01-01 00:00:00
abstract：:Purinergic P2X receptors associated with the parasympathetic nerves supplying human bladder smooth muscle (detrusor) are implicated in control of detrusor contractility. The relative abundance of all seven subtypes colocalised with synaptic vesicles on parasympathetic nerves was examined in specimens from normal adult...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-003-0788-z
更新日期：2003-12-01 00:00:00
abstract：:Interstitial cells of Cajal (ICC) are important regulatory cells in the smooth muscle coats of the digestive tract. Expression of the Kit receptor tyrosine kinase was used in this study as a marker to study their distribution and development in the striated musculature of the mouse esophagus. Sections and whole-mounts...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410100418
更新日期：2001-10-01 00:00:00
abstract：:Transforming growth factor beta (TGF-beta) is a major member of a cytokine family with pluripotent biological activity. In the liver, TGF-beta has pathophysiological significance with respect to hepatic fibrogenesis, regulation of liver cell growth, tumor development, and induction of hepatocellular apoptosis. We show...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050740
更新日期：1997-01-01 00:00:00
abstract：:Prolactin cells were identified by means of immunocytochemistry with protein-A gold as a marker on ultrathin sections of the pituitary gland of young (3-4 months), middle-aged (16-19 months), and aged (26-30 months) male Wistar rats. Point-counting volumetry revealed that the prolactin (PRL) cell-volume density in mid...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215844
更新日期：1988-02-01 00:00:00
abstract：:Thin sections after bile duct ligation showed that the depth of tight junctions appeared to increase and that the distance between individual punctate contacts appeared to become irregular and wider than in controls. The freeze fracture replicas clearly demonstrated these changes in the tight junction morphology. Chan...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00236724
更新日期：1978-12-28 00:00:00
abstract：:Back-labeling of regenerated electromotor neurons in the teleost Sternarchus albifrons was performed to test the hypothesis that, in regenerated spinal cord, incorrectly located electromotor neurons are eliminated because their axons do not reach the correct target area (electric organ). In each cross section examined...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00217166
更新日期：1985-01-01 00:00:00
abstract：:Sipunculans, a small phylum of coelomated marine worms closely related to polychaete annelids, lack a true circulatory system. We have previously shown that the sipunculan Themiste petricola can form a cellular clot, without congealing, of cell-free coelomic fluid. The clot is formed by the aggregation of large granul...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-009-0912-9
更新日期：2010-03-01 00:00:00
abstract：:The effect of copulation on the rat coagulating gland (anterior prostate) was studied. At 4 to 6 h after the beginning of copulation the coagulating glands of rats that had produced copulatory plugs were nearly empty of secretion. Ultrastructurally, the coagulating gland has large cisternae of rough endoplasmic reticu...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221773
更新日期：1977-07-19 00:00:00
abstract：:The localization of autologous antiperoxidase immunoglobulin G (IgG) was studied in the choroid plexus of Lewis rats immunized against horseradish peroxidase (HRP). This experiment was performed to study the permeability of the choroid plexus to intravascular IgG. It was shown that autologous IgG was present in the ex...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215159
更新日期：1984-01-01 00:00:00
abstract：:It is clear that the well-described phenomenon of epithelial-mesenchymal transition (EMT) plays a pivotal role in embryonic development, wound healing, tissue regeneration, organ fibrosis and cancer progression. EMTs have been classified into three subtypes based on the functional consequences and biomarker context in...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-011-1227-1
更新日期：2012-01-01 00:00:00
abstract：:The lobula descending neuron (LDN) of dipterous insects is a unique nerve cell (one on each side of the brain) that projects directly from the lobula complex of the optic lobes to neuropil in thoracic ganglia. In the supraoesophageal ganglia the LDN has two prominent groups of branches of which at least one is dendrit...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218365
更新日期：1982-01-01 00:00:00
abstract：:Subsurface cisterns (SSC's) and less frequent lamellar bodies (LB's) were identified in the granule cells of the guinea-pig fascia dentata. Both structures, composed of flattened or collapsed agranular cisterns, are continuous with the regular rough endoplasmic reticulum and occasionally connected with each other form...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF01258502
更新日期：1982-01-01 00:00:00
