20380
Using live / dead cell staining and lactate dehydrogenase assays , we found that liquiritigenin could protect human lung cells ( A549 ) from alpha - hemolysin - mediated injury .
 lactate, liquiritigenin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 lactate, liquiritigenin