From: Chapter 32, Corynebacterium Diphtheriae

Medical Microbiology. 4th edition.
Baron S, editor.
Galveston (TX): University of Texas Medical Branch at Galveston; 1996.
Copyright © 1996, The University of Texas Medical Branch
at Galveston.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.