2362
Maize grain from GM or non - GM isogenic control lines were separately formulated into rodent diets at concentrations of 12 . 5 % ( low level ) , 25 % ( middle level ) , and 50 % ( high level ) .
 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