8502
Lysates from CD19 cross-linked 1E8 cells induced robust phosphorylation of an Elk-1 fusion protein in vitro, whereas no phosphorylation of Elk-1 fusion protein occurred using lysates from CD19 cross-linked BLIN-1 cells .
 cell line: 1E8 cells; protein: Elk-1; cell line: CD19 cross-linked BLIN-1 cells; protein: Elk-1; protein: Elk-1 fusion protein; protein: Elk-1 fusion protein; protein: CD19; protein: CD19
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: 1E8 cells, Elk-1, CD19 cross-linked BLIN-1 cells, Elk-1, Elk-1 fusion protein, Elk-1 fusion protein, CD19, CD19 
Answer:
 cell line: 1E8 cells; protein: Elk-1; cell line: CD19 cross-linked BLIN-1 cells; protein: Elk-1; protein: Elk-1 fusion protein; protein: Elk-1 fusion protein; protein: CD19; protein: CD19