Primers designed for real-time quantitative PCR analysis of sca genes, rpsL and mouse GAPDH expression during R. typhi infection of mouse fibroblast cells and co-transcription of genes in putative sca operons.

*The lowercase letters on the 5′ end are included for hairpin formation.†The 3′ lowercase letter is the labeled base.*5′端的小写字母用于形成发夹结构（hairpin formation）。†3′端的小写字母为标记碱基（labeled base）。