4245
RA at 10 , 25 and 50mg / kg was administered by gavage once daily for 2 consecutive days , 6h after CCl ( 4 ) intoxication .
 CCl ( 4 )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 CCl ( 4 )