6518
In HeLa cells , the protein was almost exclusively localized to the ribosome salt wash fraction of cell lysates .
 cell line: HeLa cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: HeLa cells 
Answer:
 cell line: HeLa cells