15126
Our results show that exposure rat to LTC ( 1 / 10DL50 = 6 . 23 mg / kg ) for a period of 7 , 14 and 21 days induced a noticeable genotoxic effect in rat peripheral blood evidenced by a significant increase in the frequency of MN only at day 21 of treatment .
 Chemical: LTC
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: LTC