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mailto:felix.luna@correo.buap.mx http://www.ncbi.nlm.nih.gov/nuccore/AY364634.2 http://www.ncbi.nlm.nih.gov/pubmed/?term=fxna http://www.scirp.org/Journal/PaperInformation.aspx?PaperID=53815 http://www.scirp.org/Journal/PaperInformation.aspx?PaperID=38916