10800
Induction of CD86 expression by stimulation of U937 cells with IFN - gamma revealed the presence of two functional GAS ( gamma - interferon activation site ) elements .
 CD86, IFN - gamma, GAS, gamma - interferon activation site
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 CD86, IFN - gamma, GAS, gamma - interferon activation site