1. Human extensor carpi radialis brevis (ECRB) sarcomere length was measured intraoperatively in five subjects using laser diffraction. 2. In a separate cadaveric study, ECRB tendons were loaded to the muscle's predicted maximum tetanic tension, and tendon strain was measured to estimate active sarcomere shortening at the expense of tendon lengthening. 3. As the wrist joint was passively flexed...

Examined fish of the genus Baryancistrus (Loricaridae) from Rio Xingu in central amazonian Brazil were found infected with extrasporogonic stages of Sphaerospora sp. (Myxosporea) in the blood and sporogonic stages in the glomeruli with the resulting escape of the sporogony products into the renal tubules, apparently when the mesangial tissue in the Bowman's capsule collapsed. Spores were seen e...

In order to investigate axolemmal development in a glial cell deficient environment, normal and irradiated dorsal funiculus in rat lumbosacral spinal cord was examined by freeze-fracture electron microscopy. At 3 days of age, normal fibres are all unmyelinated and of small (less than 0.5 micron) diameter. The unmyelinated axons have a moderate density (approximately 850 microns-2) of intramembr...

Margarethe Hofmann-Amtenbrink, Brigitte von Rechenberg and Heinrich Hofmann3 MatSearch Pully, Chemin Jean Pavillard,14, CH-1009 Pully; Musculoskeletal Research Unit, Equine Hospital, Vetsuisse Faculty Zurich, University of Zurich, Winterthurerstr. 260, 8057 Zurich, Switzerland; Laboratory of Powder Technology, Institute of Materials, Swiss Federal Institute of Technology, EPFL, 1015 Lausanne, S...

The aim of this study was to the morphofunctional changes in human skin with acneiform dermatoses. Material and methods. We studied material obtained from 6 volunteers both sexes aged 26 64 years. All subjects had signs Pathologically changed areas were comparison normal same patient. anesthetized a piece 3×3 mm 2 size taken punch biopsy. After standard histological sample preparation, sections...