FIG 1.

Representative results of the rapid aminoglycoside NP test. The rapid aminoglycoside NP test was performed with a reference susceptible isolate (S) in the second column and with a reference 16S rRNA methylase isolate (ArmA) (R) in the third column in a reaction medium without (upper) and with (lower) the AG mix (amikacin plus gentamicin). Noninoculated wells are shown in the first column (NaCl-containing wells). The tested isolate (T), in the fourth column, grew in the presence of the mix of aminoglycosides and therefore presented resistance to multiple aminoglycosides. The picture was taken after 2 h of incubation.