The clostridial triose-phosphate isomerase ( tpi) gene is a housekeeping gene that specifically distinguishes Clostridium difficile from other bacteria.
PCR detection of Clostridium difficiletriose phosphate isomerase (tpi), toxin A (tcdA), toxin B (tcdB), binary toxin (cdtA, cdtB), and tcdC genes in Vhembe District, South Africa.