The distribution in the dorsal column nuclei (DCn) of post-synaptic dorsal column (PSDC) fibers was examined in rats following injections of Phaseolus vulgaris leucoagglutinin (PHA-L) in the spinal cord. Lemniscal neurons in the DCn were retrogradely labeled in the same animals by injecting the thalamus with Fluoro-Gold. In some experiments, primary afferent fibers were also labeled by injectin...

PURPOSE To clarify whether structural peculiarities formerly described in extraocular muscle (EOM) spindles of aged persons are already present in EOM spindles of a 2-year-old infant. METHODS Distal halves of two EOMs obtained from a 2-year-old multiorgan donor were immersion-fixed and prepared for electron microscopy. The fine structure of 10 muscle spindles and of 1 "false spindle" was inve...

PURPOSE To investigate the structural remodeling in gap junctions associated with cholesterol redistribution during fiber cell maturation in the adult chicken lens. We also evaluated the hypothesis that the cleavage of the COOH-terminus of chick Cx50 (formerly Cx45.6) during fiber cell maturation would affect the gap junction remodeling. METHODS Freeze-fracture TEM and filipin cytochemistry w...

‎‎‎in this paper‎, ‎the‎ notion of injectivity with respect to order dense embeddings in ‎‎the category of $s$-posets‎, ‎posets with a monotone action of a‎ pomonoid $s$ on them‎, ‎is studied‎. ‎we give a criterion‎, ‎like the baer condition for injectivity of modules‎, ‎or skornjakov criterion for injectivity of $s$-sets‎, ‎for the order dense injectivity‎. ‎also‎, ‎we consider such injectivit...

Elastin fibers are major extracellular matrix macromolecules that are critical in maintaining the elasticity and resilience of tissues such as blood vessels, lungs and skins. However, the role of elastin in articular cartilage is poorly defined. The present study investigated the organization of elastin fiber in articular cartilage, its relationship to collagen fibers and the architecture of el...

Introduction It is long known that the myocardial architecture has its functional significance. However, up to now there are no models that can fully explain the relationship between myocardial fiber structure and the mechanism of cardiac motion. Using blunt dissection, Torrent-Guasp modeled the myocardial structure as a single rope structure with figure-of-eight configuration [1]. Based on qua...

This work presents fabricated silica microstructured optical fiber with special equiangular spiral six-ray geometry, an outer diameter of 125 µm (that corresponds to conventional commercially available telecommunication fibers ratified ITU-T recommendations), and induced chirality twisting 200 revolutions per minute (or e.g., under a drawing speed 3 m minute, 66 1 m). We discuss the fabrication...

= Abstract = Immunocytochemical methods, employing a specific antiserum against human corticotropin releasing factor (CRF) and dopamine beta hydroxylase, were applied to investigate the distribution pattern of CRF and norepinephrine fibers in the cerebellar cortex of squirrel monkey. CRF fibers were present mainly in the molecular layer throughout the major regions of cerebellar cortex. Howeeer...

Films formed from saliva on surfaces are important for the maintenance of oral health and integrity by protection against chemical and/or biological agents. The aim of the present study was to investigate adsorbed amounts, thickness, and structure of films formed from human whole saliva on alumina surfaces by means of in situ ellipsometry, neutron reflectivity, and atomic force microscopy. Alum...