11709
Reconstitution of T cell antigen receptor-induced Erk2 kinase activation in Lck-negative JCaM1 cells by Syk .
 protein: Erk2 kinase; cell line: Lck-negative JCaM1 cells; protein: Syk
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: Erk2 kinase, Lck-negative JCaM1 cells, Syk 
Answer:
 protein: Erk2 kinase; cell line: Lck-negative JCaM1 cells; protein: Syk