Showing papers in "Micron in 1976"

TL;DR: In this article, electron microscopy of negatively stained coacervates of the synthetic polypenta-and polyhexapeptide of tropoelastin is reported.

TL;DR: In this paper, the ultrastructural organization of purified elastin has been studied with the aid of electron microscopy and optical diffraction, and it has been shown that the filaments have a considerable range of diameters.

TL;DR: Freeze-substitution using a mixture of 20% acrolein in diethyl ether preserves ultrastructural integrity and does not cause significant losses of diffusable ions from samples of tissues labelled with 22Na, 86Rb and 36Cl.

TL;DR: The exine of the filamentous pollen of Thalassodendron is unstructured and unornamented and gives a negative reaction for esterase, which seems to be introduced into the layer at the vacuolate stage when evaginations extend from the spore cytoplasm.

TL;DR: In this article, transmission electron microscope selected area electron diffraction patterns and scanning electron microscope energy dispersive X-ray micro-analysis spectra from thirteen silicate minerals are compared to determine the relative viability of the two methods specifically for differentiating asbestos from non-asbestos minerals.

TL;DR: A scanning electron microscope has been employed to explore the ultrastructural features of stem lesions in peas caused by the fungal pathogen Sclerotinia sclerotiorum and to determine the mode of entry of this fungus into potato leaves.

TL;DR: In this paper, a vermiculite single crystal using hydrogen peroxide has been used to extract very thin (2-3nm) crystal layers and preserve their full ion exchange capacity.

TL;DR: Glycoproteins in the pellicle may play a part in pollen adhesion as well as in pollen-stigma recognition in Phalaris minor.

TL;DR: It is suggested that fixation with 5.0% glutaraldehyde stimulates discharge of the mucus cells and that mucous is not normally present as a thick layer over the gill epithelium, if this is the case, the microridges increase the surface area by 1.8 times and would produce a very localized area of microturbulence at the cell surface thereby facilitating gaseous exchange.

TL;DR: In this article, a method for producing perforated films is described which gives reliable and reproducible results by varying the glycerol content in a polyvinylformal/chloroform-glycerol emulsion and obtaining optimum dispersion by means by ultrasonic treatment.

TL;DR: In this article, X-ray microanalysis was used to test the feasibility of using microcrystal standards for quantitative analysis of ultrathin sections of dentine and CaHPO4 crystals.

TL;DR: In this article, a pre-irradiation procedure is described which preserves negatively stained morphological features in bright field electron micrographs to a resolution of about 1.2nm, which gives the microscopist more time to select and focus appropriate areas for imaging before deteriorations take place.

TL;DR: In this paper, the authors show how standard type vacuum coating units can be converted for sputter coating at a cost which is considerably less than that of commercial sputter units, without detriment to other functions.

TL;DR: Stages in the development of the cellular slime mould Dictyostelium discoideum have been examined by scanning electron microscopy using specimens prepared by freeze-drying, infiltration with polyethylene glycol or freezing to observe variations in thickness of the slime sheath.

TL;DR: In this paper, three specimen supports (1.3nm and 15nm thick evaporated carbon films and 3-4nm thick graphite crystals) have been used in order to evaluate the gain in signal-to-noise (S/N) ratio in electron micrographs of negatively stained Tobacco Mosaic Virus (TMV) protein.

TL;DR: It is shown that cytochalasin B does affect the cell surface morphology in specimens but they give no indication as to manner in which the drug inhibits interkinetic nuclear migration.

TL;DR: Combined electron microscopy and electron energy loss analysis is used to identify impurity particles formed during the growth of epitaxial silicon films on silicon substrates in this paper, where the interdiffusion between epitaxia germanium films and silicon substrate is also studied.

TL;DR: It is considered that at least in vitro both the nucleus and cytoplasm of the cells of the adenocarcinoma possessed a phosphorylase glycosyltransferase system capable of synthesizing glycogen particles from glucose 1-phosphate.

TL;DR: In this paper, ausammenfassung Hypen von Ceratocystis ulmi, Armillaria mellea, Fomes fomentarius, Merulius lacrymans, Piptoporus betulinus, Stereum hirsutum and Trametes confragosa wurden rasterelektronenmikroskopisch untersucht.

TL;DR: In this paper, a cryogenic fracturing technique was described for examining the cross-sectional structure of surface layers and coatings on metals by scanning electron microscopy, which was found to be applicable to alloys of steel, aluminium, magnesium and titanium.

TL;DR: The view is expressed that microridges may represent surface imprintings of the cellular interdigitations which are characteristic of keratinized corneal cells in the retention of salivary mucus thus minimizing friction and aiding the passage of food material to, and its subsequent regurgitation from, the rumen.

TL;DR: In this article, electron microscopy for arterial vessels was performed on Wistar rats and three types of arterial vessel were recognized: small artery, large arteriole and small arterioles, each type demonstrated three layers consisting of endothelial cells, basement membrane and smooth muscle cells.

TL;DR: In this article, the growth kinetics of dislocation loops fitted the form of ∝ tn, where d is the loop diameter, t is the irradiation time and exponent n was found to be about 23.