21021
Mice treated with MJ33 at 12 . 5 - 25 micro mol / kg did not show changes ( compared with control ) in clinical symptomatology , body weight , hematocrit , and histology of lung , liver , and kidney during a 30 - to 50 - day observation period .
 Chemical: MJ33
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: MJ33