17657
The approximate lethal dose of the FRVSB extract was > 10 , 000mg / kg in both genders , the oral no - observed - adverse - effect level of the FRVSB extract was > 5000mg / kg / day in both genders , and no target organs were identified .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None