Table 1.

Primers used for nested PCR (modified from Vansnick et al., 2004 [10]).

Primer	DNA sequence	Product size
IS900S1	ggg ttg atc tgg aca atg acg gtt a	572 bp
IS900R3	agc gcg gca cgg ctc ttg tt
IS900S2	gga ggt ggt tgt ggc aca acc tgt	452 bp
IS900R1	cga tca gcc acc aga tcg gaa