Tests for nptII and nptIII gene targets were performed simultaneously
in a single well on the LightCycler 480 real-time PCR
platform (Roche; Vienna, Austria) using 96-well microtitre plates.
PCR TaqMan double assays were prepared according to the manufacturer's
recommendations (Ingenetix; Vienna, Austria). In brief
the amplification mix contained 5 ml of 2 LC480 Probes Master
(Roche), 0.5 ml of the nptIII mix (0.6 mM primer each, 0.2 mM 50YEE
labelled probe) and 0.5 ml nptII mix (0.6 mM primer each, 0.2 mM