2765
The animals were divided in to four groups , namely saline group ( n = 7 ) , saline + AT group ( n = 7 ) , BA group ( n = 7 ) , and BA + AT group ( n = 7 ) .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None