+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Rings of cross-striated fibrils within the cat cone pedicle: a computer-assisted serial EM analysis

, : Rings of cross-striated fibrils within the cat cone pedicle: a computer-assisted serial EM analysis. Investigative Ophthalmology & Visual Science 25(2): 201-208

Using serial electron micrographs and a computer reconstruction system the authors have examined the three-dimensional cytoarchitecture of the cat cone pedicle. These reconstructions reveal that within each pedicle is a closed 4-6 micron diameter ring of cross-striated fibrils similar to the nonring structures described in photoreceptor inner and outer segments by others in guinea pig, rat, chick, monkey, and humans. Our cone pedicle rings encompass the invaginating synaptic contacts of the cone bipolars and horizontal cells and have periodic 70 nm striations surrounding bundles of fibrils about 100 nm in diameter. The authors suggest that these striated rings may be active contractile elements and could be responsible for shape changes in cone pedicles during dark adaptation.


PMID: 6538187

Other references

Edwards, S.G.; O'Callaghan, J.; Dobson, A.D.W., 2002: PCR-based detection and quantification of mycotoxigenic fungi. Mycotoxins are secondary metabolites produced by many phytopathogenic and food spoilage fungi including Penicillium, Fusarium, and Aspergillus. The toxicity and carcinogenicity of many of these mycotoxins, and their potential to contaminate foods...

Credeur, D.P.; Dobrosielski, D.A.; Arce-Esquivel, A.A.; Welsch, M.A., 2009: Brachial artery retrograde flow increases with age: relationship to physical function. The purpose of this study was to examine the flow velocity pattern of the brachial artery and to determine its relationship to measures of physical function. Subjects from the Louisiana Healthy Aging Study (n = 95; age = 84 +/- 10 years) were eval...

Harborne, Jb, 1976: Functions of flavonoids in plants. Chemistry and Biochemistry of Plant Pigments T W Goodwin ed: 736-778

Cardarelli, P.; Branquinho, M.R.; Ferreira, R.T.B.; Cruz, F.P. da; Gemal, A.L., 2005: Detection of GMO in food products in Brazil: the INCQS experience. Regulations for the use and labeling of genetically modified organism products and derived ingredients are being implemented worldwide, what demands reliable and accurate methods to detect genetically modified organisms (GMO) in raw materials and...

Epstein, E., 1979: Electro-excision of melanomas. Excision of primary malignant melanomas by a cautery (actual heat) or by endothermy (electric cutting current) is a simple method of management. It consists of excision of a disc of tissue that contains the evident malignancy plus some surrounding...

Mercer, Bill, 2011: Health and safety in mineral exploration; the role of the Prospectors and Developers Association. Atlantic Geology 47: 31

Emsley, J.G.; Hagg, T., 2003: Endogenous and exogenous ciliary neurotrophic factor enhances forebrain neurogenesis in adult mice. Neurogenesis in the adult mammalian CNS occurs in the subventricular zone (SVZ) and dentate gyrus. The receptor for ciliary neurotrophic factor (CNTF), CNTFRalpha, is expressed in the adult subventricular zone. Because the in vitro effects of CNTF...

Rioux, J.A.; Belmonte, A.; Maazoun, R., 1984: Occurrence of Adelina riouxi Levine, 1977 (Coccidia, Adeleidae) in continental France. A. riouxi was found in a Phlebotomus ariasi female captured near Montpellier, France. It has previously been found in P. perniciosus and Sergentomyia minuta in Corsica, suggesting that it has a wide geographic distribution and a low host specifici...

Bahrmann, R., 1981: Die Erzeugung von Oligopauseeffekten bei Aleyrodes asari (Schrank) (Homoptera, Aleyrodina) durch die Wirkung unterschiedlicher Wellenlangen und Intensitaten des Lichtes. Zoologische Jahrbuecher Abteilung fuer Systematik Oekologie und Geographie der Tiere, 1084: 462-478

Engelen, A.; Vanderhaegen, J.; Van Poppel, H.; Van Audenhove, C., 2016: The use of decision aids on early detection of prostate cancer: views of men and general practitioners. While decision support tools such as decision aids can contribute to shared decision making, implementing these tools in daily practice is challenging. To identify and address issues around the use of decision support tools in routine care, this s...