Agarose gel electrophoretograms of the PCR product. Primer K was used for the PCR of blaZ and the conditions for the thermal cycler setting are given in the text. A fixed agarose concentration (2%) was used. The gel was stained with GelRed and visualised under UV light. Marker, LowRange 100 bp DNA markers; FDA209P, negative control; N315, positive control; the MRSA class and strain number are shown in the figure.