23360
Compound 1 showed inhibitory activity of prostaglandin E2 release in a concentration - dependent manner from human synovial sarcoma cells , SW982 , with an IC50 value of 1 . 0 mu M , but had no effect on cell growth up to 30 mu M .
 Chemical: prostaglandin E2
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: prostaglandin E2