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Guillen-Nepita A.L.,Centro Multidisciplinario Of Estudios En Biotecnologia | Vazquez-Marrufo G.,Centro Multidisciplinario Of Estudios En Biotecnologia | Blanco-Guillot F.T.,Laboratorio Estatal Of Salud Publica Of Michoacan | Figueroa-Aguilar G.A.,Laboratorio Estatal Of Salud Publica Of Michoacan | Vazquez-Garciduenas M.S.,Universidad Michoacana de San Nicolas de Hidalgo
New Microbiologica | Year: 2013

Random amplified polymorphism DNA (RAPD) is an easy, inexpensive technique for the characterization of pathogens in low-income countries. In this study we used RAPD to assess the genetic diversity of a small collection of isolates of mycobacteria from the Mexican state of Michoacán. In contrast with the low annual tuberculosis incidence in Michoacán relative to the national average, we found a high molecular diversity value suggesting high population diversity of M. tuberculosis in the studied region. Our findings justify further typing efforts with other molecular tools such as MIRU-VNTR and spoligotyping. Source


Barajas-Ledesma E.,Universidad Michoacana de San Nicolas de Hidalgo | Garcia-Benjume M.L.,Universidad Michoacana de San Nicolas de Hidalgo | Espitia-Cabrera I.,Universidad Michoacana de San Nicolas de Hidalgo | Bravo-Patino A.,Centro Multidisciplinario Of Estudios En Biotecnologia | And 3 more authors.
Materials Science and Engineering B: Solid-State Materials for Advanced Technology | Year: 2010

Al2O3-doped TiO2 thin films were prepared by combining electrophoretic deposition (EPD) with sputtering. A Corning* glass was used as a substrate, in which a titanium film was deposited by sputtering. Then, a precursor sol was prepared with Ti(n-OBu)4 and Al(s-OBu)3 and used as the medium for EPD. Next, the thin films were sintered and, finally, characterised by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). Several cultures of Escherichia coli, strain XL1-Blue, were prepared. Nine experiments were carried out. In three of them, an inoculum (a low amount of a product that contains bacteria) was prepared without a film; in the other six Al2O3-doped TiO2 film-coated glass substrates were irradiated with visible light before they were introduced in the inoculum. The SEM and EDS results showed that TiO2-Al 2O3 films were obtained, covering all the glass substrate and with uniform size of particles forming them, and that the aluminium was distributed uniformly on the film. XRD results showed that rutile phase was obtained. By TEM, the structure of TiO2 was demonstrated. Al 2O3-doped TiO2 thin films were successful at eliminating E. coli. © 2010 Elsevier B.V. All rights reserved. Source


Vazquez-Marrufo G.,Centro Multidisciplinario Of Estudios En Biotecnologia | Vazquez-Garciduenas M.A.S.,Centro Multidisciplinario Of Estudios En Biotecnologia | Mukhtar I.,Centro Multidisciplinario Of Estudios En Biotecnologia
Bangladesh Journal of Botany | Year: 2014

During August and November, 2013, leaves of Euphorbia hirta L. were found with a rust disease in Taxco and Morelia cities in Guerrero and Michoacán states, respectively. The pustules of rust were orange - yellow to dark brown in color and were observed on lower and upper side of leaves. Necrotic red-purple or dark brown spots were also observed upper surface of leaves with pustules on the lower surface. On the basis of morphological characteristics, the rust species was identified as Uromyces euphorbiae. This is the new record of U. euphorbiae on E. hirta in Guerrero and Michoacán states in Mexico. Source

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