27 research outputs found
Competition between ectomycorrhizal fungi during establishment on the roots of tropical pines
No full textSIGLEAvailable from British Library Document Supply Centre- DSC:D95124 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Three new records of Aureoboletus Pouzar (Boletaceae, Boletales) from Mexico
No full textIn this paper, Aureoboletus auriflammeus (Berk. & M.A. Curtis) G. Wu & Zhu L. Yang, A. innixus (Frost) Halling, A.R. Bessette & Bessette and A. roxanae (Frost) Klofac are described as new records from Mexico. These species are distributed in temperate montane cloud forest and mixed forests and may grow associated forming mycorrhizas with Fagus grandifolia Ehrh. subsp. mexicana (Martínez) E. Murray, Quercus laurina Humb et Bonpl., Q. sartorii Liebm. and Q. scytophylla Liebm. Descriptions, distribution, photographs and a key for the species of Aureoboletus from Mexico are presented
An annotated checklist of the macrofungi (Ascomycota, Basidiomycota, and Glomeromycota) from Quintana Roo, Mexico
No full textAccording to records available in the literature, 380 species of fungi and fungus-like organisms are known for the state of Quintana Roo on the Yucatán Peninsula of Mexico. We carried out mycological surveys in this state, following the classical methods for collecting, describing, and curating macrofungi. As a result of our research, 21 species are recorded for the first time for Quintana Roo, and Amanita arenicola O. K. Milller & Lodge, Inocybe xerophytica Pegler, and Russula cremeolilacina Pegler are recorded for the first time for Mexico. The distinctive characteristics and photographs are provided for the new records. As a result of this study, 401 species of macrofungi are known for Quintana Roo
Production of superoxide radical in reductive metabolism of a synthetic food-coloring agent, indigocarmine, and related compounds
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MEIC evaluation of acute systemic toxicity - Part VI. The prediction of human toxicity by rodent LD50 values and results from 61 in vitro methods.
No full textComparison of the toxicity of 30 chemicals as measured by 85 different in vitro toxicity tests
No full textMEIC evaluation of acute systemic toxicity:Part IV. In vitro results from 67 toxicity assays used to test reference chemicals 31-50 and a comparative cytotoxicity analysis
No full textMercury binding to the chelation therapy agents DMSA and DMPS and the rational design of custom chelators for mercury
No full textCopyright © 2004 American Chemical SocietyClinical chelation therapy of mercury poisoning generally uses one or both of two drugs--meso-dimercaptosuccinic acid (DMSA) and dimercaptopropanesulfonic acid (DMPS), commercially sold as Chemet and Dimaval, respectively. We have used a combination of mercury L(III)-edge X-ray absorption spectroscopy and density functional theory calculations to investigate the chemistry of interaction of mercuric ions with each of these chelation therapy drugs. We show that neither DMSA nor DMPS forms a true chelate complex with mercuric ions and that these drugs should be considered suboptimal for their clinical task of binding mercuric ions. We discuss the design criteria for a mercuric specific chelator molecule or "custom chelator", which might form the basis for an improved clinical treatment.Graham N. George, Roger C. Prince, Jürgen Gailer, Gavin A. Buttigieg, M. Bonner Denton, Hugh H. Harris, and Ingrid J. Pickerin
MEIC evaluation of acute systemic toxicity:part I: methodology of 68 in vitro toxicity assays used to test the first 30 reference chemicals
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