11456
Through the caspase - 3 / 7 pathway in vitro , IFN - alpha 2a released from HA - Tyr hydrogels inhibited the proliferation of liver cancer cells and induced apoptosis .
 Chemical: Tyr
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: Tyr