Abstract：
:Employing electron-microscopic methods that help retain polyanionic materials, we describe the extracellular coverings of a sea urchin (Lytechinus variegatus) throughout ontogeny. The surface of the embryo is covered by a two-layered cuticle (commonly called the hyaline layer), which in turn is covered by a granular layer. The granular layer is retained after addition of alcian blue to the fixative solutions, and has not been previously described for any sea urchin. After hatching, the granular layer disappears, but the hyaline layer continues to cover most of the larval surface until settlement and metamorphosis. A few days before metamorphosis, the hyaline layer lining the vestibular invagination of the competent pluteus larva is replaced by a three-layered cuticle resembling that of the adult sea urchin. The hyaline layer covering the rest of the larva is evidently lost at metamorphosis during the involution of the general epidermis.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Cameron RA,Holland NDdoi
10.1007/BF00218028subject
Has Abstractpub_date
1985-01-01 00:00:00pages
455-8issue
2eissn
0302-766Xissn
1432-0878journal_volume
239pub_type
杂志文章abstract：:Elevated target-derived smooth muscle nerve growth factor (NGF) and resultant neurogenic plasticity are associated with both hypertension and hyperactive voiding in spontaneously hypertensive rats (SHRs: hypertensive, behaviorally hyperactive). In culture, vascular (VSMCs) and bladder (BSMCs) smooth muscle cells deriv...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051194
更新日期：1998-12-01 00:00:00
abstract：:Homeobox genes encode transcription factors that regulate embryonic development programs including organogenesis, axis formation and limb development. Previously, we identified and cloned a mouse double homeobox gene, Duxbl, whose homeodomain exhibits the highest identity (67 %) to human DUX4, a candidate gene of faci...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-014-1974-x
更新日期：2014-11-01 00:00:00
abstract：:The meninges of albino Wistar rat embryos, aged between the 11th embryonic day (ED) and birth, were sectioned using a specially constructed device. This technique permits optimal microanatomical preservation of all tissues covering the convexity of the brain: skin, muscle, cartilage or bone, and the meninges. At ED11,...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221652
更新日期：1989-07-01 00:00:00
abstract：:An antiserum against conjugated histamine and two oligonucleotide probes that detect the mRNA encoding L-histidine decarboxylase (HDC) involved in histamine synthesis were used to study the appearance of histamine and its location in the kidneys of fetal, newborn and young postnatal rats and in the kidneys of pregnant...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00302960
更新日期：1992-02-01 00:00:00
abstract：:The surface ultrastructure of Kupffer cells in the rat liver has been studied by scanning electron microscopy (SEM). The results demonstrate that Kupffer cells are both significantly different and clearly distinct from endothelial cells. Kupffer cells have neither pores (and/or "sieve plates") nor fenestrations, all o...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00223015
更新日期：1975-12-10 00:00:00
abstract：:The regression of atretic oocytes in Perca fluviatilis was studied by histochemical, light and electron microscopic methods. The course of regression can be divided into three stages, the first two comprising the dissolution of the atretic oocyte and its phagocytosis by the granulosa cells of the follicular epithelium...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00209978
更新日期：1981-01-01 00:00:00
abstract：:Intercellular bridges (IBs) connecting the cytoplasms of a defined type of defective germ cell division ("arrested mitoses") in male and female gonads of the immature golden hamster were studied by electron microscopy. In both sexes, such cells appear at the time when germ cells switch from mitotic proliferation to th...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-002-0523-1
更新日期：2002-04-01 00:00:00
abstract：:Macrophages are present throughout the anterior pituitary gland. However, the features and function of macrophages in the gland are poorly understood. Recent studies have indicated that there are two main macrophage classes: M1 (classically activated) and M2 (alternatively activated). In this study, we examine whether...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-016-2564-x
更新日期：2017-05-01 00:00:00
abstract：:Histological characterization of spinal fusions in Atlantic salmon (Salmo salar) has demonstrated shape alterations of vertebral body endplates, a reduced intervertebral space, and replacement of intervertebral cells by ectopic bone. However, the significance of the notochord during the fusion process has not been add...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-010-1069-2
更新日期：2010-12-01 00:00:00
abstract：:Quantitative studies on the population of the gonadotropic cells in the pituitary of adult male rats were performed after trypsic dissociation of the pituitary glands and immunoenzymatic staining with anti-beta-LH or anti-beta-FSH antisera. Number, area and extinction of labelled cells were measured by use of an image...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00217273
更新日期：1982-01-01 00:00:00
abstract：:During normal development of many vertebrate species, substantial numbers of neurons in the central and peripheral nervous system undergo naturally occurring (or programmed) cell death. For example, approximately 50% of spinal motoneurons degenerate and die at a time when these cells are establishing synaptic connecti...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050690
更新日期：1996-11-01 00:00:00
abstract：:The origin of cobblestone-like polygonal cells (the most numerous in renal glomerular cell culture) remains controversial; they could be either dedifferentiated podocytes or parietal epithelial cells (PECs) of Bowman's capsule. Poor cellular outgrowth from glomeruli devoid of Bowman's capsule (decapsulated glomeruli) ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410100380
更新日期：2001-06-01 00:00:00
abstract：:Calretinin and calbindin-D28k are two calcium-binding proteins that are present in largely different sets of nerve cells in the central nervous system. Their appearance during development of the chick retina was studied by immunohistochemistry and Western blots. The patterns are mature one day before hatching. Each ce...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00313956
更新日期：1991-05-01 00:00:00
abstract：:The auricle of the heart of Protopterus aethiopicus contains large numbers of chromaffin cells, often lying immediately adjacent to the endothelium and displaying a bright blue-white fluorescence characteristic for catecholamines after formaldehyde treatment (Falck and Owman 1965). These results combined with X-ray mi...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233594
更新日期：1981-01-01 00:00:00
abstract：:Identified dorsal unpaired median (DUM) neurones of the locust Locusta migratoria were stained intracellularly with large amounts of cobalt to reveal their extensive peripheral branching patterns. Two neurones of the suboesophageal ganglion were studied as well as several neurones of thoracic ganglia. The peripheral b...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050970
更新日期：1997-12-01 00:00:00
abstract：:The lymphatic organization and its relationship to the vascular system in the rat small intestine was studied by scanning electron microscopy of corrosion casts and freeze-fractured tissues, and by light microscopy of injected preparations. The villus possessed 3-10 or more central lacteals depending upon the villous ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218204
更新日期：1987-05-01 00:00:00
abstract：:Freeze-fracture replicas of the rat corpus callosum revealed prominent junctional strands in fractured cell membranes of the somata of oligodendrocytes. The junctional strands were characterized by an elaborate system of straight or slightly undulating rows of linear aggregates of particles or ridges in the P face and...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00220534
更新日期：1977-10-21 00:00:00
abstract：:Although the secretory products of the hypothalamo-neurohypophyseal system are not glycoproteins, synthesis and migration of these macromolecules occur within its secretory neurons. After being labeled with 3H-fucose in the Golgi apparatus, newly synthesized glycoproteins migrate to secretion granules, lysosomes and t...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00234755
更新日期：1980-01-01 00:00:00
abstract：:Sox2-expressing stem/progenitor cells in the anterior lobe of the pituitary gland form two types of micro-environments (niches): the marginal cell layer and dense cell clusters in the parenchyma. In relation to the mechanism of regulation of niches, juxtacrine signaling via ephrin and its receptor Eph is known to play...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-017-2646-4
更新日期：2017-10-01 00:00:00
abstract：:Dendritic cells are migratory cells. Before they extravasate from the circulation into the skin across capillary blood vessel walls, they have to interact with endothelial cells. Using a fluorimetric adhesion assay, we have recently shown that CD34(+)-derived dendritic cell precursors are able to bind to resting and s...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-003-0780-7
更新日期：2004-01-01 00:00:00
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 type...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00223227
更新日期：1975-01-01 00:00:00
abstract：:We previously described the presence of MHC class II (HLA-DR) antigens, structurally similar to those on lymphoid cells and bearing the genetically-appropriate allotypic determinants, on human adrenocortical cells in the zona reticularis of normal glands. We now report a similar expression by granulosa-lutein cells (G...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00309876
更新日期：1990-11-01 00:00:00
abstract：:The distribution of neuronal elements immunoreactive for gamma-aminobutyric acid (GABA) and glycine in the cochlear nucleus of the mustached bat Pteronotus parnellii has been studied by means of the postembedding technique on serial semithin sections. Our goal has been to identify similarities and differences in the o...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050773
更新日期：1997-02-01 00:00:00
abstract：:In the developing mammalian nervous system, common progenitors integrate both cell extrinsic and intrinsic regulatory programs to produce distinct neuronal and glial cell types as development proceeds. This spatiotemporal restriction of neural progenitor differentiation is enforced, in part, by the dynamic reorganizat...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-014-2011-9
更新日期：2015-01-01 00:00:00
abstract：:The formylpeptide receptor (FPR), previously found only on polymorphonuclear leukocytes and monocytes/macrophages, responds to both synthetic N-formyl oligopeptides and those produced by bacteria. The cDNA for human FPR has been cloned and a rabbit polyclonal antiserum directed against a synthetic 11-amino-acid peptid...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051042
更新日期：1998-04-01 00:00:00
abstract：:With the gallocyanine technique (Wittkowski, Bock and Franken, 1970) Gomori-positive substances of the infundibulum can be stained for light- and electron-microscopic examination. In various mammalian species, the size of Gomori-positive elementary granules in the outer layer is markedly different from that in the inn...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218495
更新日期：1975-11-19 00:00:00
abstract：:The ultrastructure of the seminiferous tubules was studied in rats that had been subjected to whole body irradiation on the 19th day of gestation. The seminiferous tubules from 3 months-old irradiated animals are devoid of germ cells and contain only Sertoli cells. Compared with controls of the same age, the seminifer...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218294
更新日期：1982-01-01 00:00:00
abstract：:There is general consensus that enteroendocrine cells, EEC, containing the enteric hormone cholecystokinin (CCK) are confined to the small intestine and predominate in the duodenum and jejunum. Contrary to this, EEC that express the gene for CCK have been isolated from the large intestine of the mouse and there is evi...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-017-2612-1
更新日期：2017-08-01 00:00:00
abstract：:In an attempt to determine the neural control of pancreatic D cells, the pancreatic islets of the domestic fowl were examined electron microscopically from 1 to 28 days after abdominal vagotomy. Exocytotic release of many secretory granules from D cells occurred one day after vagotomy. Rough endoplasmic reticulum deve...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233732
更新日期：1980-01-01 00:00:00
abstract：:In the compound eye of the locust, Locusta, the cross-sectional area of the rhabdoms increases at "dusk" by 4.7-fold due to the rapid assembly of new microvillar membrane, and decreases at "dawn" by a corresponding amount as a result of pinocytotic shedding from the microvilli. The rhabdoms at night have more and long...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00214807
更新日期：1982-01-01 00:00:00
