An exotoxin is a poison secreted by bacteria. An exotoxin can hurt a living creature by destroying cells or changing the way that cells work. They are very strong and can cause major damage.
- ↑ Ray, editors, Kenneth J. Ryan, C. George (2010). Sherris medical microbiology (5th ed. ed.). New York: McGraw Hill Medical. ISBN 978-0-07-160402-4.