Neurotrophic effects of CS23, a mutein of human basic fibroblast growth factor (bFGF), and recombinant human epidermal growth factor (hEGF) were compared in dissociated cerebellar cultures from embryonic (E20) and early postnatal (P0-5) rats. Both CS23 and hEGF promoted the survival of cerebellar neurons without distinction of ages of animals used. The maximum effects of CS23 were always larger...

The timing and spatial distribution of cells containing FMRFamide- and 5-HT-related molecules in the embryonic development of the mollusc Viviparus ater are examined using immunohistochemistry. FMRFamide-like molecules emerge in the early stage E8 (8% of embryonic development) before the 5-HT immunoreactivity, and they are not only found during nervous system ontogeny. As the parts of the diges...

OBJECTIVE(S) Skin extracellular matrix, which contains type I and type III collagens, is involved in skin development. The aim of this study was to investigate type III collagen distribution pattern as well as its changes during pre and post-natal skin morphogenesis in rats. MATERIALS AND METHODS Ventral skins of Wistar rat embryos at different stages from 10 to 20 gestational day (E10-E20) a...

The role of sensory feedback in the early ontogeny of motor coordination remains a topic of speculation and debate. On E20 of gestation (the 20th day after conception, 2 days before birth), rat fetuses can alter interlimb coordination after a period of training with an interlimb yoke, which constrains limb movement and promotes synchronized, conjugate movement of the yoked limbs. The aim of thi...

Morphogenesis of the entire hippocampal region was examined in normal rats from embryonic (E) day EIO to E22 and on postnatal (P) days PI, P7, and P21, and was correlated with autoradiographic datings (Bayer, '79c). This region is postulated to form from two connected primordia in the telencephalon, easily recognizable on E16. One lies in the dorsomedial wall and generates a portion of the subi...

The production of ferret visual cortical neurons was studied using 3H-thymidine autoradiography. The genesis of cortical neurons begins on or slightly before embryonic day 20 (E20) of the 41 d gestational period, continues postnatally until 2 weeks after birth (P14), and follows an inside-out radial gradient with neurons for the deeper cortical layers being generated before those for the superf...

Mode multiplexers/demultiplexers (MUX/deMUX) are key components in mode division multiplexing. A silica waveguide MUX consisting of four cascaded directional couplers is experimentally demonstrated. The beam propagation method used the device design and optimization. Thermal oxidation, plasma-enhanced chemical vapor deposition, ultraviolet photolithography adopted fabrication. measurement resul...

The use of bio-ethanol as an alternative diesel engine fuel is increasing rapidly. Bioethanol is mixed with diesel fuel in different ratios and used in CI and SI engines. Vibrations have direct effects on engine components and users when the engine is operated on a vehicle. For this reason, analysis of vibration resulting from combustion in IC engines is very important. In this study, evaluatio...

This study aimed to analyze the spatial developmental changes of rat cruciate ligaments by three-dimensional (3D) reconstruction using episcopic fluorescence image capture (EFIC). Cruciate ligaments of Wister rat embryos between embryonic day (E) 16 and E20 were analyzed. Samples were sectioned and visualized using EFIC. 3D reconstructions were generated using Amira software. The length of the ...