FIG 2.

Genetic relatedness of β-lactamase-carrying Enterobacter isolates from Chicago children. A dash indicates no β-lactamase gene was detected. Isolates in which band patterns demonstrated >95% similarity (Pearson's correlation) were considered clonal and of the same strain type. ESBL, extended-spectrum β-lactamase. AmpC, AmpC cephalosporinase; MLST, multilocus sequence type, Pasteur scheme. The term “ACT/MIR” means the gene may be an ACT- or MIR-type AmpC cephalosporinase gene but was not further differentiated by DNA microarray (Check-Points).