<prompt> Endotoxin of which gram negative bacteria does not cause pathogenesis of natural disease?E. coliM. tuberculosisV. CholeraPseudomonas aerogenosa  <response>: CultureV cholerae produces convex, smooth, round colonies that are opaque and granular in transmitted light. V cholera and most other vibrios grow well at 37C on many kinds of media, including defined media containing mineral salts and asparagines mineral salts and asparagines as sources of carbon and nitrogen. V cholerae grows well on thiosulfate-citrate-bile-sucrose TCBS agar, on which it produces yellow colonies that are readily visible against the dark-green background of the agar. 