4600
Inhibition by IL-10 of proinflammatory cytokine release appears to occur at the level of gene transcription for TNF-alpha and both transcriptionally and posttranscriptionally for IL-1beta .
 proinflammatory cytokine, IL-10, IL-1beta, TNF-alpha
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 proinflammatory cytokine, IL-10, IL-1beta, TNF-alpha