The primers and probes were from Integrated DNA Technologies (Skokie, Illinois). The sequences are as follows: Primer NamePrimer Sequence (5′ to 3′) tcdB-For GAAAGTCCAAGTTTACGCTCAAT tcdB-Rev GCTGCACCTAAACTTACACCA tcdB-Probe /5HEX/ GCTGCA /ZEN/ CCTAAACTTACACCA /3IABkFQ/ C. ...