8604
We therefore created and studied a T cell line expressing the cloned delta-opioid receptor ( DOR1 ).
 cloned delta-opioid receptor, DOR1, T cell line
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:
 cloned delta-opioid receptor, DOR1, T cell line