4748
Chewing of the leaves did not induce nuclear anomalies reflecting genetic damage such as micronuclei ( MNi ) and nuclear buds ; in the highest exposure group ( but not in the overall group ) even a significant decrease in the frequencies of cells with MNi ( by 64 % ) was observed .
 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