2849
IL - 1 beta exerts its effects through interleukin - 1 receptor type I ( IL - 1RI ) and interleukin - 1 receptor accessory protein ( IL - 1RAcP ) , which together form a heterotrimeric signaling - competent complex .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None