Table 2:

The primers and their sequences used in the study

Bacterial strains	Target gene	Sequence of the primers	PCR Size (bp)
Salmonella spp	invA-secretory protein	F: 5′-GTATTGTTGATTAATGAGATCCG-3′ R: 5′-ATATTACGCACGGAAACACGTT-3′	404
S. Typhi	STY4669 - hypothetical protein	F: 5′-TGTCCGCTGTCTGAAGTCATC-3′ R: 5′-ATCTCAGGCAAACTCACAAGGG-3′	489
S. Typhimurium	STM0159 - restriction endonuclease	F: 5′-ATGATGCCTTTTGCTGCTTT-3′ R: 5′-TCCCAGCTCATCCAAAAA-3′	224
S. Enteritidis	SEN1383 - hypothetical protein	F: 5′-TGTGTTTTATCTGATGCAAGAGG-3′ R: 5′-TGAACTACGTTCGTTCTTCTGG-3′	304
S. Infantis	M.SinI -modification methylase	F: 5′-CACAATGAACGTGGTGAAGG-3′. R: 5′-CGTCCCGCGAACATATTATT-3′	184