6760
Several cytokines exhibit a high degree of temporal regulation as well as somnogenic potency ( e . g . , interleukin - 1 [ IL - 1 ] , tumor necrosis factor - alpha [ TNF - alpha ] ) .
 interleukin - 1, IL - 1, tumor necrosis factor - alpha, TNF - alpha
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 interleukin - 1, IL - 1, tumor necrosis factor - alpha, TNF - alpha