pMEX01, a 70 kb plasmid isolated from Escherichia coli that confers resistance to multiple β-lactam antibiotics

by Jose Luis Hernandez-Flores, Juan Caballero Pérez, Carlos Saldaña Gutiérrez, Andrés Cruz Hernández, Gerardo Soto Alonso, Sergio Pacheco Hernández, Sergio Romero Gómez, Francisco Fernández, Achim M. Loske, Juan Campos Guillén