The Direct and Sensitized Photochemically Induced Reaction of Chlorine and Oxalic Acid. Comparison with the Chemically Induced Reaction

1947 ◽  
Vol 69 (7) ◽  
pp. 1582-1589 ◽  
Author(s):  
Ilse L. Hochhauser ◽  
Henry Taube
Keyword(s):  
Oxalic Acid ◽  
Chemically Induced ◽  
Induced Reaction ◽  
Acid Comparison

Oscillations of bromine in Belousov-Zhabotinskii type reaction with oxalic acid

1985 ◽  
Vol 50 (7) ◽  
pp. 1450-1456
Author(s):  
Peter Ševčík ◽  
Jana Dubovská
Keyword(s):  
Oxalic Acid ◽  
Sulphuric Acid ◽  
Oxidation State ◽  
Oscillation Cycle ◽  
Type Reaction ◽  
Oscillation Reaction ◽  
Induced Reaction

The authors studied the influence of the concentrations of reactants and catalysts on the parameters of the catalysed oscillation reaction of bromate ions with oxalic acid in the medium of sulphuric acid. Ce(IV) and Mn(III) ions induce the reaction of bromine in the oxidation state either +1 or 0 with oxalic acid. In the presence of bromate ions, the induced reaction can lead to the formation of the same quantity of bromine as in the first oscillation cycle of the oscillation reaction.

Biological and Surface Properties of C-Type Virus Particles Produced by Novikoff Ascites Hepatoma Cells

1977 ◽  
Vol 35 ◽  
pp. 388-389
Author(s):  
D.C. Hixson ◽  
J.C. Chan ◽  
J.M. Bowen ◽  
E.F. Walborg
Keyword(s):  
Surface Properties ◽  
Ricinus Communis ◽  
Rat Kidney ◽  
Leukemia Virus ◽  
Viral Envelope ◽  
Virus Particles ◽  
Chemically Induced ◽  
Sarcoma Virus ◽  
Hepatocarcinoma Cells ◽  
Type C

Several years ago Karasaki (1) reported the production of type C virus particles by Novikoff ascites hepatocarcinoma cells. More recently, Weinstein (2) has reported the presence of type C virus particles in cell cultures derived from transplantable and primary hepatocellular carcinomas. To date, the biological function of these virus and their significance in chemically induced hepatocarcinogenesis are unknown. The present studies were initiated to determine a possible role for type C virus particles in chemically induced hepatocarcinogenesis. This communication describes results of studies on the biological and surface properties of type C virus associated with Novikoff hepatocarcinoma cells.Ecotropic and xenotropic murine leukemia virus (MuLV) activity in ascitic fluid of Novikoff tumor-bearing rats was assayed in murine sarcoma virus transformed S+L- mouse cells and S+L- mink cells, respectively. The presence of sarcoma virus activity was assayed in non-virus-producing normal rat kidney (NRK) cells. Ferritin conjugates of concanavalin A (Fer-Con wheat germ agglutinin (Fer-WGA), and Ricinus communis agglutinins I and II (Fer-RCAI and Fer-RCAII) were used to probe the structure and topography of saccharide determinants present on the viral envelope.

Ectodesmata as Revealed By Freeze-Etch Preparations of Plant Epidermal Cell Walls

1973 ◽  
Vol 31 ◽  
pp. 468-469
Author(s):  
N.C. Lyon ◽  
W. C. Mueller
Keyword(s):  
Electron Microscopy ◽  
Acetic Acid ◽  
Nitric Acid ◽  
Oxalic Acid ◽  
Light Microscopy ◽  
Epidermal Cell ◽  
Cell Walls ◽  
Plant Viruses ◽  
Plant Leaves ◽  
Thin Sections

Schumacher and Halbsguth first demonstrated ectodesmata as pores or channels in the epidermal cell walls in haustoria of Cuscuta odorata L. by light microscopy in tissues fixed in a sublimate fixative (30% ethyl alcohol, 30 ml:glacial acetic acid, 10 ml: 65% nitric acid, 1 ml: 40% formaldehyde, 5 ml: oxalic acid, 2 g: mecuric chloride to saturation 2-3 g). Other workers have published electron micrographs of structures transversing the outer epidermal cell in thin sections of plant leaves that have been interpreted as ectodesmata. Such structures are evident following treatment with Hg++ or Ag+ salts and are only rarely observed by electron microscopy. If ectodesmata exist without such treatment, and are not artefacts, they would afford natural pathways of entry for applied foliar solutions and plant viruses.

Caspase-8 acts as a tumor suppressor in chemically induced hepatocarcinogenesis in mice

2014 ◽  
Vol 52 (01) ◽  
Author(s):  
HM Zimmermann ◽  
N Moro ◽  
R Sonntag ◽  
JM Bangen ◽  
YA Nevzorova ◽  
...  
Keyword(s):  
Tumor Suppressor ◽  
Caspase 8 ◽  
Chemically Induced

Hepatic B cell leukemia-3 attenuates chemically-induced hepatocarcinogenesis in mice

2015 ◽  
Vol 53 (12) ◽  
Author(s):  
N Gehrke ◽  
MA Wörns ◽  
Y Alt ◽  
A Waisman ◽  
N Hoevelmeyer ◽  
...  
Keyword(s):  
B Cell ◽  
Cell Leukemia ◽  
Chemically Induced ◽  
B Cell Leukemia
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