Abstract：
:Intercellular bridges have been detected in ovarian follicle cells of Drosophila melanogaster. These bridges occur widely between follicle cells of previtellogenic chambers, while, in vitellogenic chambers, they become restricted to the columnar follicle cells. Usually, only one bridge is detectable between adjacent follicle cells, but a single cell may form two cytoplasmic continuities. The fine structure of the intercellular bridges is similar to that previously described in the development of Drosophila. The bridge wall consists of two layers of which the more external is more electron dense and thinner than the inner one. The role played by the intercellular bridges in the determination of asynchronous differentiation of the linked follicle cells is discussed in relation ot the known behaviour of these cells in the secretion of the egg covering precursors.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Giorgi Fdoi
10.1007/BF00224931subject
Has Abstractpub_date
1978-01-31 00:00:00pages
413-22issue
3eissn
0302-766Xissn
1432-0878journal_volume
186pub_type
杂志文章abstract：:Vesicular transport involves SNARE (soluble- N-ethylmaleimide-sensitive-factor-attachment-protein-receptor) proteins on transport vesicles and on target membranes. Syntaxin 13 is a SNARE enriched in brain, associated with recycling endosomes; its overexpression in PC12 cells promotes neurite outgrowth. This suggests a...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-002-0600-5
更新日期：2002-08-01 00:00:00
abstract：:Renovascular hypertension (RVH) is a progressive disease, leading to chronic kidney disease when untreated and no specific treatment is available. Therefore, development of new therapeutic modalities is imperative. RVH is triggered by renal artery stenosis and subsequent renin-angiotensin-aldosterone system activation...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-017-2602-3
更新日期：2017-08-01 00:00:00
abstract：:A gelsolin-related protein was isolated from seminal vesicles of the annelid Lumbricus terrestris. Compared with the isoforms of the gelsolin-related protein previously found in the muscle of the annelid body wall, the isolated protein was assigned to the first isoform (EWAM-P1) because of its electrophoretic mobility...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-007-0561-9
更新日期：2008-04-01 00:00:00
abstract：:The alimentary system of Habrotrocha rosa is composed of the alimentary channel, five digestive glands and another gland which is in close relation to the intestinal syncytium. After the present investigation, the alimentary channel can be divided into sections which clearly differ from each other, these are: oral cav...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00209138
更新日期：1978-06-08 00:00:00
abstract：:The otoconia of Amphibia, especially of the frog Rana esculenta, were studied by X-ray diffraction and scanning electron microscopy (SEM). The SEM studies showed that the membranous labyrinth of Amphibia contains two populations of crystals, which can easily be distinguished by their forms. The X-ray diffraction data ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00222230
更新日期：1983-01-01 00:00:00
abstract：:Right superior cervical sympathectomy was performed in one-day old rats. This operation had a small but definite effect on the postnatal development of the submandibular gland. The gland on the sympathectomized side weighed less and contained smaller amounts of DNA, RNA and protein than the contralateral intact gland....
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00227032
更新日期：1977-05-10 00:00:00
abstract：:Immunohistochemical localization of luteinizing hormone-releasing hormone (LH-RH), during different phases of the estrus cycle, in the preoptic, suprachiasmatic and arcuate nuclei, and in the OVLT of rats, with special emphasis on the ependymal cells, was studied by light, fluorescent and electron microscopy, by using...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221371
更新日期：1976-10-06 00:00:00
abstract：:Four months after the selective ablation of inner hair cells by carboplatin, the interdental cell epithelium exhibited dilated intercellular spaces and cytosolic vacuoles not seen in controls. In addition, the wide, often electron-lucent phalanges observed in the interdental cells of the normal chinchilla collapsed in...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410000253
更新日期：2000-10-01 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：:It is believed that differentiation and maintenance of taste buds in vertebrates is dependent on the trophic function of their sensory nerve supply. In the present work, colchicine was injected into the circumvallate papilla of the rat. This produced a reversible blockade of neuroplasmic transport and disappearance of...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00231023
更新日期：1978-08-25 00:00:00
abstract：:To investigate the mechanisms whereby annular gap junctions in the papillary cells of the enamel organ are degraded intracellularly, continuously growing rat incisors were examined by electron microscopy of routine thin sections as well as for the cytochemical localization of inorganic trimetaphosphatase activity. Rou...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215192
更新日期：1986-01-01 00:00:00
abstract：:The origin and renewal of the argentaffin cells in the pyloric glands of hamsters were studied by flash, cumulative and pulse labelling autoradiography with 3H-thymidine. The argentaffin cells were identified by the Diazo Method using Fast Red B Salt. By flash labelling autoradiography, it was shown that the argentaff...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00222771
更新日期：1977-06-20 00:00:00
abstract：:The globiferous pedicellariae of Psammechinus miliaris are described. Two fixation methods giving minimal distortion and rapid tissue hardening were adapted for soft tissue preparation for scanning electron microscopy. The pedicellarial valves are covered by a microvillous epithelium. The outer valve epithelial microv...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00220184
更新日期：1975-10-13 00:00:00
abstract：:The pineal organ of the blind, cave-dwelling fish, Typhlichythyes subterraneous, was examined with both light and electron microscopes. Like the eyes, the pineal in this troglobytic species was found to be regressed. Two cell types, photoreceptor and supportive cells, were described in the pineal epithelium. Although ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233895
更新日期：1978-12-29 00:00:00
abstract：:Placing the clawed toad Xenopus laevis on a black background stimulates the melanotrope cells in the pars intermedia of the pituitary gland to release proopiomelanocortin (POMC)-derived peptides, including alpha-MSH and N-acetyl-beta-endorphin. In this study three types of secretory granules, electron-dense (approxima...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00314557
更新日期：1993-12-01 00:00:00
abstract：:Research in mammals has established the existence of a neuronal network that lies within the hypothalamus and that regulates energy homeostasis. However, it is unknown whether this system has been evolutionarily conserved. The objective of the present study was therefore to examine the influence of the agouti-related ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-003-0755-8
更新日期：2003-08-01 00:00:00
abstract：:Bovine granulosa cells from 3-7 mm follicles were cultured without anchorage in soft agar/methylcellulose solution for 14 days, with or without 50 ng/ml basic fibroblast growth factor. The granulosa cells divided to form colonies of cells. These were analysed by light and electron microscopy, immunohistochemistry and ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318878
更新日期：1995-12-01 00:00:00
abstract：:Fluorescent (aminergic) fibers were demonstrated by the Falck-Hillarp technique in all parts of the neurohypophysis (NH) in the roach (Leuciscus rutilus). The fibers are very thin and few in number in the rostral (RNH) and proximal neurohypophysis (PNH) but slightly more numerous in the NH adjacent to the pars interme...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219959
更新日期：1975-01-01 00:00:00
abstract：:The intestine, which is exposed to nutrition and to food-derived antigens and microbes including viruses and bacteria, might be an important site for the immune response. Crucial structural and functional differences exist between the small and large intestine, regional differences even having been demonstrated within...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-003-0706-4
更新日期：2003-07-01 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：:With the use of tissue prepared by freeze-substitution and the unlabelled antibody enzyme technique, neurophysin and vasopressin were localized at the ultrastructural level in the pofterior pituitary and median eminence of the guinea pig. In the posterior pituitary neurophysin was found in the large neurosecretory gra...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221777
更新日期：1975-06-13 00:00:00
abstract：:The present lectin histochemical comparison of cauda epididymal and ampullary bovine sperm was conducted to investigate whether ampullary secretions are involved in altering the plasma-membrane glycoconjugates of sperm. A marked redistribution of glycoconjugates between sperm from these two regions was indeed revealed...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318822
更新日期：1994-03-01 00:00:00
abstract：:Electron microscopy of the pineal receptor cells in light- and dark-adapted brook trout, Salvelinus fontinalis and the rainbow trout, Salmo gairdneri, revealed no significant differences in the tubular and filamentous elements of the inner segment, neck and supranuclear regions. However, changes in synaptic relations ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00234177
更新日期：1980-01-01 00:00:00
abstract：:In the small intestine of the pig, neuromedin U (NMU)-immunoreactivity was mainly confined to the nerve plexus of the inner submucosal and mucosal regions. After colchicine treatment, a high number of immunoreactive nerve cell bodies was observed in the plexus submucosus internus (Meissner), whereas only a low number ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00239453
更新日期：1989-11-01 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 reactivity of rat lymph node macrophages and reticulum cells has been studied in relation to the course of the immune response. Special attention was paid to the interdigitating cells (IDC) in the paracortex and the dendritic reticulum cells (DRC) in the germinal centre. Different types of macrophage predominate i...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00231019
更新日期：1978-08-25 00:00:00
abstract：:Neuroblastoma, a malignancy of the developing peripheral nervous system that affects infants and young children, is a complex genetic disease. Over the past two decades, significant progress has been made toward understanding the genetic determinants that predispose to this often lethal childhood cancer. Approximately...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-018-2820-3
更新日期：2018-05-01 00:00:00
abstract：:An electron microscopical investigation of the pineal gland of the adult noctule bat revealed the presence of some peculiar ciliary derivatives, similar to the club-shaped outer segment of rudimentary photoreceptor cells in the pineal organ of nonmammalian vertebrates. The pinealocytes of population I can be classifie...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00222058
更新日期：1977-07-26 00:00:00
abstract：:The vertebrate limb is a powerful model system for studying the cellular and molecular interactions that determine morphological pattern during embryonic development. Recent advances in our understanding of these interactions have shed new light on the molecular mechanisms of vertebrate limb development, evolution and...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s004410051261
更新日期：1999-04-01 00:00:00
abstract：:Intracellular insulin-binding sites were directly traced in fixed monolayer cultures of a variety of cell types with the use of two fluorescent derivatives of insulin, viz. fluorescein isothiocyanate (FITC)-labelled and tetramethyl rhodamine isothiocyanate (TMRITC)-labelled insulin. Both derivatives retained the prope...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00232150
更新日期：1980-01-01 00:00:00
