FIG 4.

Scanning electron micrographs of C. difficile spores present on spiked hospital surgical gowns before and after treatment with NaDCC at 1,000 ppm for 10 min. Images depict untreated R20291 U spores on surgical gown fibers (A), R20291 P single spore (B), NaDCC-treated R20291 U spores on surgical gown fibers (C), and R20291 U single spore (D). Arrows highlight spores adhered to gown fibers before (A) and after (C) NaDCC treatment, and morphological changes in exosporium before (B) and after (D) NaDCC treatment. Scale bars are 200 nm in panels B and D, 2 μm in panel A, and 10 μm in panel C.