<prompt> Toxin is produced by all except:C. diphtheriaeC. ulceransC. hofmanniC. pseudotuberculosis  <response>: Ans. is c i.e., Corynebacterium hofmanniiRef: Ananthanarayan, 9the, p. 242 and 8the, p. 239; Harrison, 17the, p. 893-941; GreenwoodAmong the Corynebacterium species, three Corynebacterium produce diphtheria toxin: C. diphtheriae, C. pseudotuberculosis and C. ulcerans. Like C. diphtheriae, C. pseudotuberculosis and C. ulcerans can produce toxin and cause clinically resembling Diphtheria. 