19975
Significantly elevated micronucleus frequency was observed in bone marrow cells ( BMCs ) in all MC - LR treatments .
 Chemical: MC - LR
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: MC - LR 
Answer:
 Chemical: MC - LR