1812
The protein shows significant sequence similarities to the family of G-protein coupled chemokine receptors and turned out to be identical to the recently described receptor EBI1 .
 protein: G-protein coupled chemokine receptors; protein: chemokine receptors; protein: G-protein; protein: receptor EBI1
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: G-protein coupled chemokine receptors; protein: chemokine receptors; protein: G-protein; protein: receptor EBI1