Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Intracellular toxin yield (A) and metabolic end products (B) in culture medium during growth of C. difficile VPI 10463 in PY, PY with nine amino acids added, and PY with cysteine added (30 mM). End products are given after subtraction of levels present in noninoculated medium. Acetone, 2-propanol, and 2-butanol were not found in any culture. The mean and standard error of three experiments are shown.
