geoscience.net logo
+ 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

Ultrastructure of elastic cartilage in the rat external ear


, : Ultrastructure of elastic cartilage in the rat external ear. Cell & Tissue Research 218(1): 149-160

The structure of elastic cartilage in the external ear of the rat was investigated by transmission and scanning electron microscopy. The narrow subperichondrial, boundary zone contains predominantly ovoid cells rich in cell organelles: mitochondria, Golgi complex, granular endoplasmic reticulum and smal (40-100 nm) vesicles. Scarce glycogen granules and bundles of 6-7 nm cytoplasmic filaments are present. Deeper in the boundary zone, 1 or more cytoplasmic lipid droplets appear and cytofilaments become more abundant. Fully differentiated chondrocytes in the central zone of the cartilage plate resemble white adipose cells. They are globular and contain a single, large cytoplasmic lipid droplet. The cytoplasm is reduced to a thin peripheral rim; it contains a flattened nucleus, few cytoplasmic organelles and abundant, densely packed, cytoplasmic filaments. The intercellular matrix is very sparse. The pericellular ring consists of collagen fibrils .apprx. 20 nm in diameter and a proteoglycan cartilage matrix in the form of a stellate reticulum. The complex of these 2 structures appears in the scanning electron micrographs as a network of randomly oriented, .apprx. 100 nm thick fibrils. Spaces between pericellular rings of matrix also contain thick elastic fibers or plates, apparently devoid of microfibrils. In scanning electron micrographs, elastic fibers could be detected only in a few areas, in which they were not obscured by other constituents of the matrix. Immature forms of elastic fibers, oxytalan (pre-elastic) and elaunin fibers, were found in the perichondrial and boundary zones.

US$19.90

PMID: 7195776

DOI: 10.1007/bf00210101


Other references

Coad, J., 2006: Nutrition is a hot topic. Nursing New Zealand 10(11): Suppl 4-Suppl 4

Anonymous, 1938: Circular of 2nd March, 1938, concerning Law for the Control of Bovine TB. (France). This circular fixes the amount of compensation to be paid to farmers for the slaughter of those of their cattle which are diagnosed as being tuberculous, and the means by which this compensation is to be paid according to the terms of the law of J...

Liu, Z.M.; Pang, S.F., 1993: Binding of -labelled iodomelatonin in the duck thymus. (1-25I)-labelled iodomelatonin binding sites in membrane preparations of duck thymus were studied. The specific binding of (125)-labelled iodomelatonin in the duck thymus was stable, saturable, reversible and of high affinity. Scatchard analysis o...

Bengtson J.L.; Laws R.M., 1985: Trends in crabeater seal age lobodon carcinophagus at maturity an insight into antarctic marine interactions. Siegfried, W R , P R Condy And R M Laws (Ed ) Antarctic Nutrient Cycles And Food Webs; 4th Scar (Scientific Committee on Antarctic Research) Symposium on Antarctic Biology, Wilderness, South Africa, Sept 12-16, 1983 Xiv+700p Springer-Verlag: New York, N Y , Usa; Berlin, West Germany Illus Maps 669-675

Op-de-Coul, P.G., 1932: De broed vogels van Wieringen. Orgaan der Club van Nederlandsche Vogelkundigen, 5: 55-59

Guseva A.N.; Krasil nikova M.P.; Taranenko Y.I., 1971: Solid and viscous naphtha compounds of the upper Proterozoic and lower Paleozoic of the Uchur-May region. Vestnik Moskovskogo Universiteta, Seriya 4, Geologiya Moscow

Hibbs, J.W.; Pounden, W.D., 1948: The influence of the ration on some of the blood vitamin changes in the young dairy calf. Calves fed whole milk + lucerne hay from birth had a higher carotene level in the plasma during the first 6 weeks than those fed whole milk, whole milk + grain, or whole milk + grain + lucerne. No marked variations were noted in the ascorbic acid...

Khramtsova, I.F., 1974: A statistical method for determining the biological productivity of herbaceous coenoses. The method recommended for measuring the above-ground biomass of herbaceous plant communities is based on counting shoots of the dominant, or preferably all, plant species in certain unit areas and determining their average weight. Both parameters...

Saucier, A.; Platonow, I.; Hebert, C., 1968: Bactericidal activity of four disinfectants in the control of bovine mastitis. Teat-cup dipping was employed to assess the efficacy of 4 commonly used proprietary disinfectants (Hibitane, lodovet, BK Powder (chlorine) and losan) in preventing the spread of mastitis organisms and other bacteria. In the laboratory, teat cups w...

Bokov A.N.; Kabatchenko O.A.; Saukhat V.R., 1971: Hygienic evaluation of different samples of reline. Gigiena i Sanitariya 36(11): 21-25