5185
Cultured primary keratinocytes revealed a level of genotoxicity comparable with that of direct exposure to 50 - 100 nM of BPDE .
 Chemical: BPDE
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: BPDE