1041
Finally, two other domains, located at positions -460 and -510, interact with proteins that are only present in megakaryocytic cells .
 cell line: megakaryocytic cells
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:
 cell line: megakaryocytic cells