Fine structure of the retinal epithelium (RPE) of the emu (Dromaius novaehollandiae).


:As part of an ongoing comparative fine structural study, the retinal pigment epithelium (RPE), choriocapillaris and complexus basalis (Bruch's membrane) in the emu (Dromaius novaehollandiae) have been investigated by light and electron microscopy. The RPE consists of a single layer of cuboidal cells joined basally by a series of tight junctions. Basally (sclerally) the RPE cells display numerous deep infoldings while apically (vitreally) plentiful microvillar processes interdigitate with the photoreceptor outer segments. Internally the epithelial cells show a large vesicular nucleus, plentiful smooth endoplasmic reticulum (SER) and numerous polysomes, but very little rough endoplasmic reticulum (RER). Numerous pleomorphic mitochondria are predominantly basally located. In the light-adapted specimens studied, the melanosomes of the RPE are almost exclusively located within the apical processes of these cells. Phagosomes and lysosome-like bodies are also present, as are myeloid bodies which often display ribosomes on their outer surface. Bruch's membrane (complexus basalis) is typical of avian species in that it is pentalaminate and the central lamina densa is displaced towards the choriocapillaris. The choricocapillaris endothelium is attenuated but only minimally fenestrated facing Bruch's membrane. Most of these fenestrations show a single-layered diaphragm but fenestrations with a double-layered diaphragm are not uncommon.


Tissue Cell


Tissue & cell


Braekevelt CR




Has Abstract


1998-04-01 00:00:00














  • Evidence for multiple satellite cell populations and a non-myogenic cell type that is regulated differently in regenerating and growing skeletal muscle.

    abstract::We have performed studies to determine if different populations of satellite cells provide nuclei to growing and regenerating skeletal muscle fibers. Satellite cells were isolated from regenerating or growing anterior tibialis muscles, and their phenotypic properties were compared in vitro. Isolates from regenerating ...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Molnar G,Ho ML,Schroedl NA

    更新日期:1996-10-01 00:00:00

  • Quantitative characterization of endothelial cell morphologies depending on shear stress in different blood vessels of domestic pigs using a focused ion beam and high resolution scanning electron microscopy (FIB-SEM).

    abstract::Microstructured surfaces mimicking the endothelial cell (EC) morphology is a new approach to improve the blood compatibility of synthetic vascular grafts. The ECs are capable of changing their shapes depending on different shear conditions. However, the quantitative correlation between EC morphology and shear stress h...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Pham TT,Maenz S,Lüdecke C,Schmerbauch C,Settmacher U,Jandt KD,Bossert J,Zanow J

    更新日期:2015-04-01 00:00:00

  • Atypical 'fibrillar' flight muscle in strepsiptera.

    abstract::The fine structure of the principal and ancillary metathoracic flight muscle fibres in the adult male of a strepsipteran, Elenchus tenuicornis, is described. Power-producing dorsal longitudinal and dorso-ventral flight muscles show features consistent with myoneural asynchrony: myofibrils are large and discrete and ar...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Smith DS,Kathirithamby J

    更新日期:1984-01-01 00:00:00

  • Localization of calcium in an annelid visceral muscle by pyroantimonate deposition and by x-ray microprobe analysis.

    abstract::The loci of calcium distribution in Nereis pharyngeal visceral muscle have been examined by cytochemical precipitation using potassium pyroantimonate. In Na-, Ca- and Mg-free media, pyroantimonate incubation was used to pinpoint loci of intracellularly bound calcium. This method also revealed heavy deposition on the i...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Alohan FI,Huddart H

    更新日期:1981-01-01 00:00:00

  • Rat heart-derived endothelial and smooth muscle cell cultures: isolation, cloning and characterization.

    abstract::This report describes the initiation, cloning and establishment of long-term serial cultures of rat heart-derived vascular endothelial (EC) and smooth muscle cells (SMC). Populations of these cells derived from both the macro-and microcirculation were obtained utilizing isolated heart perfusion technique. Elimination ...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Diglio CA,Grammas P,Giacomelli F,Wiener J

    更新日期:1988-01-01 00:00:00

  • Ultrastructure studies of the extracellular filaments in the ventral nerve of Panulirus argus.

    abstract::The ventral nerve cord of the spiny lobster, Panulirus argus was examined by transmission and scanning electron microscopy. Tannic acid mordant stain was used to enhance extracellular filaments. The ventral nerve cord is surrounded by an unusual perineurial sheath composed primarily of interwoven extracellular filamen...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Williamson LC,Baerwald RJ

    更新日期:1990-01-01 00:00:00

  • Azoramide ameliorates fructose-induced nonalcoholic fatty liver disease in mice.

    abstract::Nonalcoholic fatty liver disease (NAFLD) is a frequent health problem. The insulin resistance and endoplasmic reticulum (ER) stress have been suggested to play important roles in the development and progression of NAFLD. However these processes and correlations have not fully been understood yet. Azoramide, an antidia...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Bagci R,Sahinturk V,Sahin E

    更新日期:2019-08-01 00:00:00

  • Fine structure of tarsal sensory organs in the whip spider Admetus pumilio (Amblypygi, Arachnida).

    abstract::The sensory organs on the tarsi of the antenniform first legs of the whip spider Admetus pumilio C. L. Koch (Amblypygi, Arachnida) were examined with the scanning and transmission electron microscope. At least four different types of hair sensilla were found: (1) thick-walled bristles, which have the characteristics o...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Foelix RF,Chu-Wang IW,Beck L

    更新日期:1975-01-01 00:00:00

  • Lenticles: innervated secretory structures that are expressed at every other larval moult.

    abstract::Lenticles are dome-shaped circles or ovals of cuticle with a dark rim. They occur with a precise segmental arrangement in the larvae and pupae of lycaenid and hesperiid butterflies. In Calpodes ethlius (Lepidoptera, Hesperiidae) each lenticle is secreted by a pair of large polyploid epidermal cells. The dark rim or an...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Franzl S,Locke M,Huie P

    更新日期:1984-01-01 00:00:00

  • Evaluating the in vitro therapeutic effects of human amniotic mesenchymal stromal cells on MiaPaca2 pancreatic cancer cells using 2D and 3D cell culture model.

    abstract::Human amniotic mesenchymal stromal cells (hAMSCs) are considered as a population of multipotent cells. The molecular events associated with mesenchymal stromal cell (MSC)/tumor cell interactions should be studied to identify the role of MSCs on suppressing or inducing the key signaling pathways of tumor cells. Thus, d...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Rahmani Z,Safari F

    更新日期:2021-02-01 00:00:00

  • Sites of lanthanum occlusion in the testis of the crayfish Procambarus paeninsulanus (Crustacea: Cambaridae).

    abstract::The presence of stage-dependent occlusive junctions between adjacent Sertoli cells in the seminiferous epithelium of the crayfish testis was demonstrated by a lanthanum tracer study. The germinal epithelium did not appear to be compartmentalized, as evidenced by access of lanthanum to spermatogonia, spermatocytes, and...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Harvey MC,Hinsch GW,Cameron DF

    更新日期:2001-12-01 00:00:00

  • Histochemical studies of uric acid in some insects. I. Storage in the fat body of Periplaneta americana and the action of the symbiotic bacteria.

    abstract::An improved histochemical method for uric acid consists in precipitation as silver magnesium urate combined with fixation of the tissues in formol/glutaraldehyde followed by argentaffin reaction with silver nitrate buffered with "tris" to pH 9.5. This reveals urates both in solid deposits and in solution in the tissue...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Wigglesworth VB

    更新日期:1987-01-01 00:00:00

  • Morphology and design of the extensible intersegmental membrane of the female migratory locust.

    abstract::The morphology of the extensible intersegmental membrane (i.s.m.) of the female Locusta migratoria migratorioides is dictated by three main requirements: (a) high extensibility (1500%), (b) low stiffness (5 X 10(3) Pa), (c) low Poisson ratio in the plane of the cuticle (0.01 or less). These requirements can be met onl...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Vincent JF

    更新日期:1981-01-01 00:00:00

  • Indapamide accentuates cardiac chronotropic responses to epidermal growth factor in chick cardiomyocytes.

    abstract::We have previously shown that indapamide [chloro-4-N-(methyl-2-indolinyl-1)-sulfamoyal-3-benzamide] has a direct action on the heart to alter ion fluxes. This study sought to examine the potential interaction between indapamide and epidermal growth factor (EGF). Cardiomyocytes were prepared as primary culture from 7-d...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Rabkin SW

    更新日期:1996-08-01 00:00:00

  • Distribution of spermatozoa in the utero-tubal junction and isthmus of pigs, and their relationship with the luminal epithelium after mating: a scanning electron microscope study.

    abstract::The epithelial cell morphology and distribution in the utero-tubal junction and isthmus of pigs was documented by scanning electron microscopy around ovulation. In animals mated at different times before slaughter, our observations confirmed that the utero-tubal junction and posterior part of the isthmus regulate the ...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Fléchon JE,Hunter RH

    更新日期:1981-01-01 00:00:00

  • Human chondrocyte cell lines from articular cartilage of metatarsal phalangeal joints.

    abstract::Chondrocytes can be isolated from human adult cartilage from metatarsal phalangeal joints. After enzymatic digestion to isolate viable cells, confluent monolayers were obtained 2-4 weeks after the start of cell division. Chondrocytes cultures, initiated and maintained in HAM's F12 with bovine fetal serum without the a...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Patti AM,Gabriele A,Della Rocca C

    更新日期:1999-12-01 00:00:00

  • Control of follicular epithelium development and vitelline envelope formation in the mosquito; role of juvenile hormone and 20-hydroxyecdysone.

    abstract::Using microsurgical manipulations, hormone applications, and transmission electron microscopy we have investigated the regulation of differentiation of the follicular epithelium and formation of the vitelline envelope (VE) in primary follicles in the ovary of the mosquito, Aedes aegypti. During the first 3 days after ...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Raikhel AS,Lea AO

    更新日期:1991-01-01 00:00:00

  • Recycling of mast cells following degranulation in vitro: an ultrastructural study.

    abstract::Mature mast cells, isolated from the rat peritoneal cavity, were placed into suspension culture, either as resting or after degranulation by exposure to compound 48/80, and were maintained for up to 63 hr. No mitotic cells were observed, and cell number was conserved. The culture conditions did not cause spontaneous d...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Burwen SJ

    更新日期:1982-01-01 00:00:00

  • Effects of continuous and intermittent exposure of lactating mothers to aroclor 1242 on testicular steroidogenic function in the adult male offspring.

    abstract::Polychlorinated biphenyls (PCBs) are worldwide pollutants and have caused hazardous effects on many animal species including humans. They have been detected in human milk and therefore exposure of newborns to PCBs is unavoidable if they are breast-fed. We present our findings on two experiments performed to test the e...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Kim IS,Ariyaratne HB,Chamindrani Mendis-Handagama SM

    更新日期:2001-04-01 00:00:00

  • Effect of low radiation dose on the expression and location of aquaporins in rat submandibular gland.

    abstract::Head and neck cancers are common in several regions of the world and the treatment usually includes radiotherapy. This treatment can generate adverse effects to the salivary flow, with a relationship between the dose and the damage caused. Salivary gland cells are highly permeable to water and therefore, they express ...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Araujo MVT,Spadella MA,Chies AB,Arruda GV,Santos TM,Cavariani MM,Domeniconi RF

    更新日期:2018-08-01 00:00:00

  • Immunolocalization of venom metalloproteases in venom glands of adult and of newborn snakes of Bothrops jararaca.

    abstract::Using immunoelectronmicroscopy we analyzed qualitative and quantitatively the intracellular distribution of bothropasin, hemorrhagic factor 2 (HF2) and hemorrhagic factor 3 (HF3) in the venom secretory cells from adult snakes in the active (7 days after venom extraction) and in the resting (without venom extraction fo...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Carneiro SM,Assakura MT,Barrence FA,Cardoso SR,de Martins Camargo AC,Sesso A

    更新日期:2002-12-01 00:00:00

  • Ultrastructure of the putative stem cell niche in rat mammary epithelium.

    abstract::There is now strong evidence that the stem cells of many tissues reside in specialized structures termed niches. The stem cell niche functions to house and regulate symmetric and asymmetric mitosis of stem cells in mammalian skin, mouse and human bone marrow, mouse brain, gut, and hair follicle, and Drosophila ovary a...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Chepko G,Dickson RB

    更新日期:2003-04-01 00:00:00

  • Modeling traumatic injury in organotypic spinal cord slice culture obtained from adult rat.

    abstract::Nowadays there are various models of spinal cord injury (SCI) that recreate mechanisms of human SCI. The ex vivo modeling of injury is a robust approach, confronts with less experimental and ethical challenges. Currently almost all ex vivo models are obtained either from embryonic or postnatal animals, which can hardl...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Pandamooz S,Salehi MS,Zibaii MI,Safari A,Nabiuni M,Ahmadiani A,Dargahi L

    更新日期:2019-02-01 00:00:00

  • Adipose-derived stromal cell transplantation for treatment of stress urinary incontinence.

    abstract::We aimed to investigate the application of adipose-derived stromal cells in the treatment of stress urinary incontinence (SUI). Animal models of stress urinary incontinence were established with Sprague-Dawley female rats by complete cutting of the pudendal nerve. Rat adipose-derived stromal cells were isolated, cultu...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Wu G,Song Y,Zheng X,Jiang Z

    更新日期:2011-08-01 00:00:00

  • Ultrastructure and distribution of identified neurosecretory terminals in the sinus gland of the terrestrial isopod Oniscus asellus.

    abstract::An ultrastructural study of the sinus gland of the terrestrial isopod, Oniscus asellus, reveals that this structure consists of two regions: the bulb, which is attached by a narrow stalk to the optic lobe, and the lateral extension, which extends from the bulb along the optic tract to the compound eye. The bulb has a ...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Chiang RG,Steel CG

    更新日期:1985-01-01 00:00:00

  • Immunocytochemical study of tubulin in the 9 + '1' sperm axoneme of a monogenean (Platyhelminthes), Pseudodactylogyrus sp.

    abstract::The spermatozoon of the monopisthocotylean monogenean Pseudodactylogyrus sp. (a gill parasite of eels) has a single axoneme showing a 9 + '1' pattern, a nucleus and a mitochondrion, but has no cortical microtubules. This species thus provides a very simple model for the study of tubulin in the 9 + '1' axonemes of the ...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Mollaret I,Justine JL

    更新日期:1997-12-01 00:00:00

  • Glial cell contacts in insects: Effects of feeding on intercellular junctions.

    abstract::The intercellular junctions associated with the modified glial cells of the perineurium have been examined in the ganglia and main abdominal nerves of the blood-sucking bug Rhodnius prolixus, both before and and after feeding, by means of freeze-fracture and tracer studies. It was found that the pleated septate juncti...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Swales LS

    更新日期:1985-01-01 00:00:00

  • The three-dimensional aspect of mammalian lung multilamellar bodies.

    abstract::The three-dimensional aspect of rat and monkey lung multilamellar bodies was demonstrated in lipid retained thin sections. The glutaraldehyde and urea lipid retention embedment and an Epon 812 resin polar dehydrant procedure were utilized to retain lamellar lipids for precise morphological study. The unextracted multi...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Stratton CJ

    更新日期:1976-01-01 00:00:00

  • Ultrastructural localization of calcium, by electron-probe X-ray microanalysis, in the small intestine of suckling rats.

    abstract::The subcellular distribution of calcium has been investigated in samples, from the intestinal mucosa of 10-day rats, prepared for X-ray microanalysis by various techniques designed to minimize the loss of this element. Calcium retention and its threshold of detection was most satisfactory in freeze-dried frozen thin s...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Dinsdale D

    更新日期:1983-01-01 00:00:00

  • Selective uptake of noradrenaline, dopa, and 5-hydroxytryptamine by the nervous system of Phocanema decipiens (Nematoda): a light autoradiographic and ultrastructural study.

    abstract::As determined by light microscopic autoradiography, parts of the nervous system of Phocanema decipiens have selective and high affinity mechanisms for the uptake of tritiated noradrenaline, dihydroxyphenylalanine (dopa) and 5-hydroxytryptamine. In the nervous system, noradrenaline is accumulated only by the four papil...

    journal_title:Tissue & cell

    pub_type: 杂志文章


    authors: Goh SL,Davey KG

    更新日期:1976-01-01 00:00:00