Abstract：
:The adenohypophysial primordium of Xenopus laevis tadpoles at stages 33/34 to 46 (Nieuwkoop and Faber, 1956) were examined immunohistologically for alpha-MSH, beta-MSH and ACTH. beta-MSH was demonstrated from stage 37/38 onwards, and alpha-MSH from stage 39. No signs of ACTH production were detected. alpha-MSH and beta-MSH occurred in the same cells. No differences were found in the intensity of immunofluorescence between tadpoles which were kept on a black and a white background. The present study lends no support to the hypothesis concerning the derivation of alpha-MSH from ACTH. The observations made suggest that the morphological formation of the pars intermedia is accomplished during stages 37/38 to 39.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Erik N,Nyholm I,Doerr-Schott Jdoi
10.1007/BF00231955subject
Has Abstractpub_date
1977-05-16 00:00:00pages
231-9issue
2eissn
0302-766Xissn
1432-0878journal_volume
180pub_type
杂志文章abstract：:Uptake of uteroglobin (UGL) by day-6 rabbit blastocysts and the intracellular fate of this protein were studied by light- and electron-microscopic autoradiography, immunocytochemistry and acid-phosphatase cytochemistry. UGL, labelled with N-succinimidyl-(2-3-3H)-propionate, was administered to embryos in vitro for 25 ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00305254
更新日期：1990-12-01 00:00:00
abstract：:Exocytotic release of the secretory granules of the endocrine cells in the midgut of a cockroach, Periplaneta americana, was studied by means of fixation with tannic acid in combination with glutaraldehyde and osmium tetroxide. A sequence of images indicative of exocytosis suggests the following steps in this process:...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00213851
更新日期：1982-01-01 00:00:00
abstract：:Ontogenetic differentiation of the human thymus was investigated in 50 embryos by means of light and electron microscopic methods in an attempt to clarify the morphogenesis of the complicated microecology of thymic tissue. At the 8th gestational week (g.w.), the primordium of the thymus contains almost exclusively und...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00237813
更新日期：1980-01-01 00:00:00
abstract：:A body of evidence points to the existence of stem cell stores in adult tissues, in addition to the well-known hematopoietic stem cells from bone marrow. Many reports describe the ability of these multipotent cells (developmentally non-compromised with their organs of origin) to give rise to many different cell types ...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-006-0172-x
更新日期：2006-09-01 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：:We have examined the cortex of the teleost (Brachydanio rerio) egg before and during exocytosis of cortical granules by scanning, transmission, and freeze-fracture electron microscopy. In the unactivated egg, the P-face of the plasma membrane exhibits a random distribution of intramembranous particles, showing a densi...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00398079
更新日期：1991-08-01 00:00:00
abstract：:The distributions within the coeliac ganglion of different chemically coded subgroups of noradrenaline neurons, and the relationships between these neurons and nerve fibres projecting to the ganglion from the intestine, have been assessed quantitatively by use of an immunohistochemical double-staining method. Noradren...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218395
更新日期：1986-01-01 00:00:00
abstract：:Perinatal changes in the appearance of intramembranous particles (IMPs) of microvilli of enterocytes were analyzed quantitatively. In both the jejunum and the ileum, the IMP density on the P-face showed no significant changes from day 17 of gestation to day 5 of postnatal life. It increased between day 5 and day 12, r...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00212224
更新日期：1983-01-01 00:00:00
abstract：:An electron-microscopic study of the myotendinous portion of the diaphragm in the Wistar rat has shown that at the ends of muscle fibers, longitudinally oriented invaginations and peripheral furrows of the sarcolemma establish specialized contacts with individual sacs of the sarcoplasmic reticulum. The construction of...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00251058
更新日期：1986-01-01 00:00:00
abstract：:The effect of vascular endothelial growth factor (VEGF165) on the chorioallantoic membrane (CAM) of 13-day-old chick embryos was studied. The factor was applied in doses of 0.5-4 micrograms for a period of up to 4 days. Macroscopical, histological and immunohistological studies were carried out. The localization of th...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00327997
更新日期：1993-10-01 00:00:00
abstract：:The ultrastructure of corpora lutea obtained during the preimplantation implantation and early post-implantation periods has been studied in 20 western spotted skunks. Fine structure of granulosa lutein cells was correlated with progesterone levels. The corpus luteum of the prolonged (7 month) preimplantaion period co...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218972
更新日期：1975-12-02 00:00:00
abstract：:By use of the immunofluorescence technique TSH-, LH- and ACTH-cells were localized in the hypophysis of tadpoles of Xenopus laevis. The first signs of the activity of these cells were observed in early stages of the development, i.e., stage 39 for ACTH, and stage 42 for TSH and LH. ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216218
更新日期：1982-01-01 00:00:00
abstract：:Tight junctions (TJ) between retinal pigmented epithelial (RPE) and retinal endothelial cells maintain the outer and inner blood-retinal barrier, and the breakdown of these barriers is associated with retinal diseases. Vascular endothelial growth factor (VEGF) increases vascular permeability and is thought to be invol...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-005-0046-7
更新日期：2006-01-01 00:00:00
abstract：:Satellite cells can be isolated from skeletal muscle biopsies, activated to proliferating myoblasts and differentiated into multinuclear myotubes in culture. These cell cultures represent a model system for intact human skeletal muscle and can be modulated ex vivo. The advantages of this system are that the most relev...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-013-1655-1
更新日期：2013-12-01 00:00:00
abstract：:Among heterogeneous S100β-protein-positive (S100β-positive) cells, star-like cells with extended cytoplasmic processes, the so-called folliculo-stellate cells, envelop hormone-producing cells or interconnect homophilically in the anterior pituitary. S100β-positive cells are known, from immunohistochemistry, to emerge ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-015-2256-y
更新日期：2016-02-01 00:00:00
abstract：:Filamentous intranuclear rodlets were found in a majority of cells in a bronchiolar neuroepithelial body of a rabbit. These rodlets appear to be similar to structures that have been described primarily in neural tissues. They are composed of large bundles of microfibrils made up of smaller subbundles. No close associa...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00210521
更新日期：1981-01-01 00:00:00
abstract：:Orexins (OxA and OxB) and their receptors (Ox1R and Ox2R), originally detected in the hypothalamus, have also been localized in multiple cerebral areas and peripheral organs. Thus, in addition to their central function in the regulation of food intake, arterial blood pressure, heart rate, sleep/wake cycle, sexual beha...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-012-1394-8
更新日期：2012-06-01 00:00:00
abstract：:The retina of the distal and proximal lens-bearing complex ocelli are composed of pigmented sensory cells and long pigmented cells. A ciliary sheath from each sensory cell, together with the processes of long pigmented cells, extends through the vitreous layer as far as the capsule that envelops the lens. Each ciliary...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219415
更新日期：1976-07-30 00:00:00
abstract：:In early postnatal rats, immunoreactive LHRH perikarya in the preoptic area were studied by light and electron microscopy. Synaptic junctions were found between the immunoreactive perikaryon or its process, and the immunonegative nerve fibers. The significance of these synapses is discussed in relation to possible mec...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216754
更新日期：1981-01-01 00:00:00
abstract：:Cortisone-treated Buffalo rats have been parabiosed with untreated controls of the same age. The optical and electron microscopy, including histochemistry, of costal cartilage of these rats has been compared with that in single cortisone treated rats, single controls, and control parabiosed with control rats, at 14 an...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00223122
更新日期：1978-05-18 00:00:00
abstract：:The morphology and histology of the tibial auditory system of the New Zealand weta, Hemideina crassidens, are described. The groups of acoustic sensilla conform closely to the subgenual organ, intermediate organ and crista acoustica of the Tettigoniidae. Each prothoracic tibia bears two thick (40-100 micrometers) tymp...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233584
更新日期：1981-01-01 00:00:00
abstract：:Synapses in the lateral septum of the murine brain have been investigated by ultrastructural immunocytochemistry, using monoclonal anti-neurophysins in both immunoperoxidase and immunogold techniques. In the region shown by light microscopy to be rich in vasopressinergic innervation, synaptic boutons containing approx...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215524
更新日期：1987-08-01 00:00:00
abstract：:Male rats kept on a standard diet were treated either with progesterone or testosterone by a single intramuscular injection of preparations which are slowly absorbed and metabolized. The rats were anaesthetized 24 h after application of the hormones, perfused with glutaraldehyde, and the parathyroid glands prepared fo...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318797
更新日期：1992-05-01 00:00:00
abstract：:The effects of cytochalasin B (CB) on pancreatic structure and amylase release were studied by use of pancreatic fragments, isolated acini and isolated acinar cells. In pancreatic fragments and isolated acini CB caused the disappearance of microfilaments underlying the apical plasma membrane, loss of apical microvilli...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219848
更新日期：1977-04-29 00:00:00
abstract：:Notch signaling is evolutionarily conserved from Drosophila to human. It plays critical roles in neural stem cell maintenance and neurogenesis in the embryonic brain as well as in the adult brain. Notch functions greatly depend on careful regulation and cross-talk with other regulatory mechanisms. Deregulation of Notc...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-017-2641-9
更新日期：2018-01-01 00:00:00
abstract：:An ultrastructural study of the rostral pars distalis of the pituitary of Aphanius dispar specimens taken from freshwater or hypersaline marshes revealed significant structural differences which indicate higher activity of the prolactin cells in the hypotonic medium. Prolactin cells from freshwater specimens had large...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221103
更新日期：1977-04-20 00:00:00
abstract：:The skeletal body muscle of vertebrates is derived from segmentally arranged mesodermal structures, the somites. Only the dorsal epithelial half of the somite, the dermomyotome, gives rise to muscle cells during normal development. Head muscle takes its origin from the somites, the unsegmented paraxial head mesoderm a...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s004410051281
更新日期：1999-04-01 00:00:00
abstract：:Cell degeneration, as a phenomenon accompanying developmental processes, was originally described over a century ago. Apoptosis, a term introduced approximately three decades ago, has occupied investigators particularly with respect to cell and tissue kinetics, emphasizing its role in the disposal of supernumerary, ma...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s004410000227
更新日期：2000-07-01 00:00:00
abstract：:The olfactory epithelium of mice after axotomy was investigated to clarify the stem cells of olfactory cells by double immunostaining using antikeratin (MA903) and anti-bromodeoxyuridine (BrdU) antibodies and by conventional electron microscopy. When a single dose of BrdU was given to mice 9 days after axotomy, immuno...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318179
更新日期：1991-11-01 00:00:00
abstract：:Correlations between the presence of surface coat and immobilization antigen of Paramecium tetraurelia were studied. Supravital, partial removal of the surface coat resulted in accelerated response of monobacterially and axenically grown cells to the homologous antiserum. Ciliates pretreated with trypsin or pronase (0...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219984
更新日期：1977-07-11 00:00:00
