21508
This study was carried out to investigate the genotoxic effect of boron ( B ) on maize using randomly amplified polymorphic DNA ( RAPD ) method .
 Chemical: boron; Chemical: B
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: boron; Chemical: B