The connectives above and below the second thoracic ganglion and nerves to and from the mesothoracic leg were severed in Periplaneta americana. Isolated ganglia and severed nerve cord were examined in the electron microscope. In the connectives, sheaths of degenerating fibers remain continuous but become thicker and more dense. There is increase in number and more haphazard disposition of the n...

IN 1953 the presence of the characteristic concentric lamellar structure of the myelin sheath was demonstrated in sciatic nerves of chick embryos (2). In the fibers from embryos incubated for 18 days, the alternate dense and less dense bands of the myelin sheath were closely packed, with a unit of spacing of about 97 A. There were about 24 layers (a layer being one dense band plus the less dens...

In sections of KMnO(4)-fixed, developing mouse sciatic nerves, the central gap of mesaxons in myelinating fibers is normally closed with close apposition of the outside approximately 20 A dense strata of the two approximately 75 A Schwann cell membranes. The two combined outside strata make the intraperiod line bisecting each myelin lamella. The approximately 150 A mesaxon is elaborated spirall...

Obstruction of the male reproductive tract commonly results in generation of antisperm autoantibodies. However, only a few of the sperm autoantigens recognized by these antibodies have been characterized. To identify postobstruction rat sperm autoantigens, sperm proteins were separated by two-dimensional(2-D) gel electrophoresis. Spots corresponding to proteins that were stained by at least 50%...

Background & Objectives: Oral submucous fibrosis (OSMF) is a condition where excessive deposition of dense collagen fibers occurred in the connective tissue of oral mucosa. An alteration of collagen necessitates an in depth understanding of collagen in oral tissues as no breakthrough studies have been reported. Therefore the aim was to correlate the clinical, functional and histopathol...

We present maps and spectra of the HCN(1−0) HCO + (1−0) lines in extreme outer Galaxy, at galactocentric radii between 14 22 kpc, with 13.7 m Delingha telescope. The nine molecular clouds were selected from a CO/ 13 CO survey quadrants. goal is to better understand structure these poorly studied subsolar metallicity regions relation star formation. are all narrow, less than 2 km s −1 half power...

Herpesvirus envelopment is assumed to follow an uneconomical pathway including primary envelopment at the inner nuclear membrane, de-envelopment at the outer nuclear membrane, and reenvelopment at the trans-Golgi network. In contrast to the hypothesis of de-envelopment by fusion of the primary envelope with the outer nuclear membrane, virions were demonstrated to be transported from the perinuc...

Immunohistochemical methods are used to characterize the distribution of noradrenergic and serotonergic fibers in primary visual cortex of cynomolgus monkeys (Macaca fascicularis) at various postnatal ages. Previous studies in adult squirrel monkeys have shown that serotonergic fibers are generally restricted to the upper four cortical laminae and are especially dense in layer IV, whereas norad...

Abstract DR21(OH) ridge, the central part of a high-mass star- and cluster-forming hub-filament system, is resolved spatially kinematically into three nearly parallel fibers (f1, f2, f3) with roughly north–south orientation, using observations molecular transitions H 13 CO + (1 ? 0), N 2 NH D 1,1 1 0,1 ) Combined Array for Research in Millimeter Astronomy. These are all mildly supersonic ( ? ve...