abstract：:The fine structure of boar Leydig cells is re-examined in samples post-fixed with OSO4-K4Fe(CN)6, an elective method to preserve the ultrastructural detail of the endocrine testis. The cells show a pleomorphic arrangement of the smooth endoplasmic reticulum. Large "vesicle-like" dilatations are interspersed in the tub...

journal_title：Cell and tissue research

authors： Aguas AP

更新日期：1983-01-01 00:00:00

abstract：:In the present study, the effect of LHRH on the process of protein and/or peptide secretion characterized by the formation of granular vesicles has been studied by means of an in vitro system in the pinealocytes of three different species of rodents. LHRH has a strong influence on the activity of this process. However...

journal_title：Cell and tissue research

authors： Haldar-Misra C,Pévet P

更新日期：1983-01-01 00:00:00

abstract：:Ornithine decarboxylase (ODC) activity was measured in homogenates of neonatal rabbit ovaries from the day of birth to day 22, an interval that corresponds to the progressing stages of the meiotic prophase from oogonia to diplotene and follicle formation. The ODC-activity was high on days 1 and 3 when most germ cells ...

journal_title：Cell and tissue research

authors： YoungLai EV,Byskov AG

更新日期：1983-01-01 00:00:00

abstract：:Poreless sensilla (np-sensilla) on the antennae of 18 species from 9 insect orders, and on the maxillary palps of Periplaneta americana were investigated using chemo- and cryofixation. The number of np-sensilla is low. Common features of these sensilla are: (a) the presence of a peg, (b) the lack of pores that lead to...

journal_title：Cell and tissue research

authors： Altner H,Schaller-Selzer L,Stetter H,Wohlrab I

更新日期：1983-01-01 00:00:00

abstract：:1,25-Dihydroxyvitamin D3 and 24,25-dihydroxyvitamin D3 have antagonistic effects on the acellular bone of the tilapia Sarotherodon mossambicus. 1,25-Dihydroxyvitamin D3 inhibits the activity of the lining osteoblasts. Prolonged administration leads to demineralization of the bone matrix. Injection of 24,25-dihydroxyvi...

journal_title：Cell and tissue research

authors： Wendelaar Bonga SE,Lammers PI,van der Meij JC

更新日期：1983-01-01 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

authors： Arima T,Yamamoto T

更新日期：1983-01-01 00:00:00

abstract：:The distribution and synaptic connections of the indoleamine-accumulating neurons in the retinae of the goldfish and carp were studied by means of fluorescence and electron microscopy. The indoleamine-accumulating neurons were visualized after intravitreal injection and uptake of the indoleamine 5,6-dihydroxytryptamin...

journal_title：Cell and tissue research

authors： Holmgren-Taylor I

更新日期：1983-01-01 00:00:00

abstract：:Previous studies have revealed a remarkable capacity of intracerebral grafts of embryonic brain tissue to establish extensive axonal connections with denervated areas in the brains of adult rats. In the present study we have explored the possibilities of using grafts in the spinal cord to substitute for the loss of no...

journal_title：Cell and tissue research

authors： Nornes H,Björklund A,Stenevi U

更新日期：1983-01-01 00:00:00

abstract：:Nerve fibers connecting the brain with the pineal gland of the Mongolian gerbil (central pinealopetal fibers) were investigated by means of light and electron microscopy. Several myelinated fibers penetrate from the brain into the deep pineal gland, extend further into the pineal stalk and continue to the superficial ...

journal_title：Cell and tissue research

authors： Møller M,Korf HW

更新日期：1983-01-01 00:00:00

abstract：:The papillary muscle of the cat heart's right ventricle has not been studied previously with quantitative ultrastructural techniques despite its wide use for functional studies. This tissue was perfusion-fixed, processed for electron microscopy, and morphometric techniques were used to assess the ultrastructural chara...

journal_title：Cell and tissue research

authors： Marino TA,Houser SR,Martin FG,Freeman AR

更新日期：1983-01-01 00:00:00

abstract：:A special cell type was identified in the mucosal epithelium of the large intestine of the tadpole of the bullfrog, Rana catesbeiana. It is a slender, columnar cell, with a dark, basally situated nucleus. By electron microscopy the cell displays prominent bundles of filaments emerging from each microvillus and extendi...

journal_title：Cell and tissue research

authors： Sugimoto K,Ichikawa Y,Nakamura I

更新日期：1983-01-01 00:00:00

abstract：:The fine structure of the horny teeth of the lamprey, Entosphenus japonicus, was examined by light- and electron-microscopy. Most of the horny teeth consisted of two horny and two nonhorny layers. The primary horny layer was well keratinized, and the cells were closely packed and intensely interdigitated, being joined...

journal_title：Cell and tissue research

authors： Uehara K,Miyoshi S,Toh H

更新日期：1983-01-01 00:00:00

abstract：:Using techniques for enhanced microtubular preservation (albumin pretreatment of Gray) occipital and pyriform cortices of rats were studied by electron microscopy at various stages of development. A close structural relationship was seen between microtubules (mts), focal membrane densities, synaptic vesicles, and pres...

journal_title：Cell and tissue research

authors： Westrum LE,Gray EG,Burgoyne RD,Barron J

更新日期：1983-01-01 00:00:00

abstract：:The young of the aquatic Australian frog, Rheobatrachus silus (Leptodactylidae) develop from eggs to juvenile frogs in the mother's stomach. During brooding the stomach expands greatly and becomes very thin walled. Transmission electron microscopy showed that the distension of the stomach was accompanied by a severe d...

journal_title：Cell and tissue research

authors： Gibbins IL,Tyler MJ

更新日期：1983-01-01 00:00:00

abstract：:The antigen detected by the rat anti-mouse monoclonal antibody (m Ab), anti-BSP-3, has been initially described as a brain cell-surface protein. Evidence is presented that this m Ab recognizes mouse (Na+ + K+)-ATPase (ATP phosphohydrolase, E.C.3.6.1.3). The antigen, purified from mouse brain by means of affinity chrom...

journal_title：Cell and tissue research

authors： Gorvel JP,Liabeuf A,Massey D,Liot D,Goridis C,Maroux S

更新日期：1983-01-01 00:00:00

abstract：:Rat thymic phagocytic cells were characterized in vitro using various light- and electron-microscopical techniques. Thymic cell suspensions were mechanically prepared and enriched for non-lymphoid cells, which were predominantly phagocytic and of three types. Type I showed acid phosphatase (APh) activity in small gran...

journal_title：Cell and tissue research

authors： Duijvestijn AM,Schutte R,Köhler YG,Korn C,Hoefsmit EC

更新日期：1983-01-01 00:00:00

abstract：:The developmental mutant of Drosophila (oraJK84) is characterized by nonfunctional photoreceptor cells (R1-6), while the R7/R8 cells are normal. A fundamental question is: Does the near absence of photosensitive membranes inhibit development of the R1-6 axons and their synapses at the other end of the cell? The retina...

journal_title：Cell and tissue research

authors： Stark WS,Carlson SD

更新日期：1983-01-01 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

authors： Marmo F,Balsamo G,Franco E

更新日期：1983-01-01 00:00:00

abstract：:In the compound eye of Notonecta glauca, the backswimmer, there is a small ventral region in which the rhabdoms differ in structure from those in the other parts of the eye. Here, among other unusual features, there is a special orientation of the microvilli of the central rhabdomeres, i.e., in most of the median eye ...

journal_title：Cell and tissue research

authors： Schwind R

更新日期：1983-01-01 00:00:00

abstract：:The innervation of the uterus in the ovoviviparous urodele Salamandra salamandra was studied. In whole mount preparations of the thin-walled uterus of pregnant females, a dense adrenergic network was demonstrated using a modified glyoxylic acid fluorescence technique. Based on vesicle type and cytochemical reactivity ...

journal_title：Cell and tissue research

authors： Greven H,Schindelmeiser J,Straub H

更新日期：1983-01-01 00:00:00

abstract：:The ultrastructure of the cuticle, fibrillar glands and stäbchen (see Reichensperger 1908) of the arm spines of the brittle star Amphipholis squamata are described. Stäbchen are shown to be cuticular projections into which pass one or more uniciliate cytoplasmic processes. The proximal tips of the cilia protrude into ...

journal_title：Cell and tissue research

authors： Whitfield PJ,Emson RH

更新日期：1983-01-01 00:00:00

abstract：:The termination of intrafusal muscle fibres was studied in muscle spindles of the tenuissimus muscle of the Chinese hamster. Most nuclear chain fibres terminated within the spindle capsule. The nuclear bag- and nuclear chain fibres that extended beyond the limit of the spindle capsule terminated in the endomysial conn...

journal_title：Cell and tissue research

authors： Desaki J,Uehara Y

更新日期：1983-01-01 00:00:00

abstract：:The distribution of immunoreactive thyrotropin-releasing hormone (TRH) in the forebrain and hypophysis of Rana catesbeiana was studied by means of specific radioimmunoassay and immunohistochemistry based on peroxidase-antiperoxidase (PAP) techniques. A relatively high concentration of immunoassayable TRH is present in...

journal_title：Cell and tissue research

authors： Seki T,Nakai Y,Shioda S,Mitsuma T,Kikuyama S

更新日期：1983-01-01 00:00:00

abstract：:Apart from the known hypothalamic controls, which have been well documented, a myriad of compounds both endogenous and exogenous have proved effective in influencing secretion of prolactin (PRL). Recent studies have shown that somatostatin (SRIF), when injected intra-atrially as a bolus, is able to inhibit PRL secreti...

journal_title：Cell and tissue research

authors： Saunders SL,Reifel CW,Shin SH

更新日期：1983-01-01 00:00:00

abstract：:The influence of adrenalectomy and administration of hypertonic saline on the amount of vasopressin, oxytocin, and neurophysin contained in the median eminence and the neural lobe of rats was studied by means of the following methods: (i) morphometric and microphotometric analyses of aldehyde fuchsin-stained histologi...

journal_title：Cell and tissue research

authors： Bock R,Detzer K,Geiger A,Lang RE,Ostermann E,Sinner G

更新日期：1983-01-01 00:00:00

abstract：:The development of the heterophil granulocyte in the bone marrow of the rat is described, and an electron-microscopical analysis of the changes in the cytoplasm as well as in the granule population in several stages of maturation is reported. Three types of granule originate in consecutive stages of heterophil maturat...

journal_title：Cell and tissue research

authors： Brederoo P,van der Meulen J

更新日期：1983-01-01 00:00:00

abstract：:Transformation of the gastrula to the pluteus includes development of the ability of the larva to control the direction of ciliary beat and coordinate activities of the ciliary band with activities of the esophageal muscles (48-60 h, 15 degrees C). Glyoxylic acid-induced fluorescence shows several cells of the animal ...

journal_title：Cell and tissue research

authors： Burke RD

更新日期：1983-01-01 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

authors： Williams DS

更新日期：1982-01-01 00:00:00

abstract：:A recently developed immunohistochemical technique for serotonin (Steinbusch et al. 1978) was used in the present investigation to study the occurrence of this indoleamine in the granulated epithelial cells of neuro-epithelial bodies (NEB). Lungs from neonatal rabbits and pigs exhibit immunoreactive cell groups identi...

journal_title：Cell and tissue research

authors： Lauweryns JM,de Bock V,Verhofstad AA,Steinbusch HW

更新日期：1982-01-01 00:00:00

abstract：:Numerous nerve fibres containing acetylcholinesterase and noradrenaline, as well as avian pancreatic polypeptide-, vasoactive intestinal peptide-, or substance P-like immunoreactivity are observed around arteries in the external carotid rete of the cat. The nerves are located in the adventitial layer close to the medi...

journal_title：Cell and tissue research

authors： Uddman R,Edvinsson L,Malm L

更新日期：1982-01-01 00:00:00

abstract：:Adult white-footed mice, Peromyscus leucopus, were kept either in long photoperiod (LP; LD 16:8) or in short photoperiod (SP; LD 8:16) for six weeks. Ovaries were serially sectioned and examined histologically. Preantral follicles were observed to release their oocyte into the ovarian stroma. This phenomenon is termed...

journal_title：Cell and tissue research

authors： Spanel-Borowski K,Petterborg LJ,Reiter RJ

更新日期：1982-01-01 00:00:00

abstract：:The dorsal integument of the girdle of the chiton Mopalia muscosa is covered by a chitinous cuticle about 0.1 mm in thickness. Within the cuticle are fusiform spicules composed of a central mass of pigment granules surrounded by a layer of calcium carbonate crystals. Tapered, curved chitinous hairs with a groove on th...

journal_title：Cell and tissue research

authors： Leise EM,Cloney RA

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

authors： Kolde G,Themann H

更新日期：1982-01-01 00:00:00

abstract：:The ultrastructural changes induced by the topical application of retinol acetate on hamster cheek pouch epithelium were evaluated using stereological analysis. Electron micrographs were prepared of the basal and superficial regions of the nucleated cell layer of the epithelium obtained from 3 treated and 3 control an...

journal_title：Cell and tissue research

authors： Hill MW,Harris RR,Carron CP

更新日期：1982-01-01 00:00:00

abstract：:Examination of pituitaries from young and adult turtles representing four families, reveals that in addition to the abundant juxtaneural pars tuberalis (juxPT) found in this class of reptiles, there is generally a substantial amount of pars tuberalis (PT) tissue closely associated with the pars distalis (PD). The PT f...

journal_title：Cell and tissue research

authors： Pearson AK,Licht P

更新日期：1982-01-01 00:00:00

abstract：:Gap junctions in the phylum Brachiopoda are shown to be of the P type as has been previously reported in invertebrates only in molluscs and possibly bryozoans. However, the mollusc gap junctions appear identical to vertebrae gap junctions in the fracture face on which particles remain, in particle spacing and in parti...

journal_title：Cell and tissue research

authors： Flower NE,Green CR

更新日期：1982-01-01 00:00:00

abstract：:An indirect immunofluorescence study of the frozen sections of the spleen of an anuran amphibian, Xenopus laevis, showed that lymphocytes bearing a small amount of immunoglobulin (Ig) were localized mostly in the white pulp of non-immunized toads. There were fewer fluorescent cells in the red pulp. In the toads hyperi...

journal_title：Cell and tissue research

authors： Obara N,Tochinai S,Katagiri C

更新日期：1982-01-01 00:00:00

abstract：:The fine structure of one of the cellular components of the nucleus recesses lateralis of trout is described. These cells have an enormously developed smooth endoplasmic reticulum which makes their identification easy. The relationship of this cell type with the ventricular cavity, neighbouring cells and the presence ...

journal_title：Cell and tissue research

authors： García JM,Alvarez-Uría M

更新日期：1982-01-01 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

authors： Nässel DR,Strausfeld NJ

更新日期：1982-01-01 00:00:00

abstract：:Intercellular junctions in the young mouse ovary were examined by electron microscopy utilizing freeze-fracture and thin-sectioning techniques. Projections from the granulosa cells adjacent to the oocyte (GI) traverse the zona pellucida and form small gap junctions on the oocyte surface. On the P-face of these cells, ...

journal_title：Cell and tissue research

authors： Toshimori K,Oura C

更新日期：1982-01-01 00:00:00