1853
By contrast, the MAP kinases ERK1 and ERK2 were fully activated by TPA or TCR stimulation and were not affected by Ca2+ , CD28, or CsA .
 protein: ERK1; protein: ERK2; protein: MAP kinases; protein: TCR
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: ERK1, ERK2, MAP kinases, TCR 
Answer:
 protein: ERK1; protein: ERK2; protein: MAP kinases; protein: TCR