94 TOXIN AND ANTITOXIN 



In addition to the toxins reviewed in these chapters, recent work has 

 proven that toxins may, under certain conditions, be derived from bacteria 

 other than those mentioned, e.g., cholera, typhoid bacteria and meningo- 

 cocci. Problems such as these are still, however, open to scientific 

 discussion; consequently no exact statements can be made here. 



