6972
CONCLUSION : The results demonstrate that at the site of lumbar disc herniation , inflammatory cytokines such as interleukin - 1 alpha are produced , which increases prostaglandin E2 production .
 interleukin - 1 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 alpha