6499
This conclusion is based on the observations of the immunologic changes that characterize the acute stages of illness as well as on the demonstrated association with toxin - producing bacteria in the pharynx and gastrointestinal tract .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None