3694
We reported that superfusion of hERG - expressing HEK293 ( hERG - HEK ) cells with matrine ( 1 , 10 mu M ) increased the hERG current by promoting hERG channel activation .
 Chemical: matrine
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: matrine