22851
This has many benefits , including : a ) clarifying the mechanisms that underlie the disease botulism , b ) providing insights for development of medical countermeasures against the toxin , and c ) helping to explain the meaning of a lethal dose of toxin .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None