3307
Furthermore , betaine ( 200 and 400 mg / kg ) treatment increased the ventricular expression of Bcl - 2 and reduced the level of Bax , therefore causing a significant increase in the ratio of Bcl - 2 / Bax .
 Chemical: betaine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: betaine