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The clone Escherichia coliO25 ST131, typically producing extended‐spectrum beta‐lactamases (ESBLs), has spread globally and became the dominant type among extraintestinal isolates at many parts of the world. However, the reasons behind the emergence and success of this clone are only partially understood. We compared the core type genes by PCR of ESBL‐producing and ESBL‐nonproducing strains isolated...
The emergence of strains of multidrug‐resistant Gram‐negative bacteria mandates a search for new types of antimicrobial agents. Alyteserin‐2a (ILGKLLSTAAGLLSNL.NH2) is a cationic, α‐helical peptide, first isolated from skin secretions of the midwife toad, Alytes obstetricans, which displays relatively weak antimicrobial and haemolytic activities. Increasing the cationicity of alyteserin‐2a while maintaining...
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