The comma bacillus of Koch, and the typhoid fever germ of Eberth, are especially destroyed in normal gastric juice.
But attempts made to cultivate in a similar way the comma bacillus by transferring it from animal to animal failed.
Cultures of the comma bacillus were also made in agar-agar jelly, which is not liquefied by them.
Trimethylenediamine is believed to have been isolated by Brieger from cultivations in beef broth of the comma bacillus.
comma bacillus com·ma bacillus (kŏm'ə)
See Koch's bacillus.