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Cephalic and limb anatomy of a new Isoxyid from the Burgess Shale and the role of "stem bivalved arthropods" in the disparity of the frontalmost appendage.
PLoS One
February 2016
University of Toronto, Department of Ecology and Evolutionary Biology, 25 Willcocks Street, Toronto, Ontario, M5S 3B2, Canada; Royal Ontario Museum, Department of Natural History-Palaeobiology, 100 Queen's Park, Toronto, Ontario, M5S 2C6, Canada; University of Toronto, Department of Earth Sciences, 22 Russell Street, Toronto, Ontario, M5S 3B1, Canada.
We herein describe Surusicaris elegans gen. et sp. nov.
View Article and Find Full Text PDFThe authors analyze the status of cationic transmembranous transport in leukocytes in patients with chronic secondary pyelonephritis (CPN) as related to the clinical manifestations of pathology and immune response. 117 patients with CPN were examined. In 58 patients, pyelonephritis was associated with nephrolithiasis, in 59 with different abnormalities of the kidneys and urinary tract.
View Article and Find Full Text PDFPyridoxylated polymerized hemoglobin (PP-Hb) was fractionated by the method of high pressure liquid chromatography, Molecular weight distribution, oxygen carrying capacity and antigenic characteristics of separated fractions have been investigated. It was demonstrated that a fraction may be separated from the crude PP-Hb, which is greatly homogeneous if structural and functional characteristics are concerned, and also optimal according to the parameters investigated. So, by a corresponding fractionation method it is possible to overcome the main limitation for use of PP-Hb as an artificial oxygen carrier--its heterogeneity.
View Article and Find Full Text PDFTwo par regions were localized within the structure of a small colicinogenic plasmid ColA. One of them functions at the expense of plasmid multimere resolution. Analysis of the nucleotide sequence of the region revealed the existence of essential homology with the par locus of plasmid ColE1.
View Article and Find Full Text PDFTheoretical conformational analysis was carried out for a nonapeptide hormone (delta sleep-inducing peptide). Possible structure of the neuropeptide under physiological conditions may be described by a set of low-energy conformations belonging to nine different forms of the backbone. A solution of the "reverse conformational problem" for delta sleep inducing peptide enables one to predict modified amino acid sequences (D-Ala3-, Pro4-, Pro6-, Pro7, and Tyr7-analogs), which may assume one of the low-energy states of the native hormone.
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