19874
Squalene did not affect significantly the comet tail length ( CTL ) ( except 2500 mu g / ml ) and comet tail intensity ( CTI ) at all treatments in vitro .
 Chemical: Squalene
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: Squalene