4717
We conclude that the MAP kinase signal transduction pathway consisting of Raf-1 , MEK1 , and ERK1 and ERK2 functions in the stimulation IL-2 gene transcription in activated T lymphocytes .
 protein: IL-2; protein: Raf-1; protein: ERK1; protein: MAP kinase; cell type: T lymphocytes; protein: ERK2; protein: MEK1; DNA: IL-2 gene
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: IL-2, Raf-1, ERK1, MAP kinase, T lymphocytes, ERK2, MEK1, IL-2 gene 
Answer:
 protein: IL-2; protein: Raf-1; protein: ERK1; protein: MAP kinase; cell type: T lymphocytes; protein: ERK2; protein: MEK1; DNA: IL-2 gene