13544
Compared to the parental cell line the dose-response curve of IL-1 -induced IL-2 production was shifted in both potency and efficacy.
 parental cell line, IL-2, IL-1
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:
 parental cell line, IL-2, IL-1