8932
The requirement for AP1 activation suggested a role for the mitogen-activated protein kinase ( MAPK ) signaling pathway in regulating alpha2 integrin gene expression .
 protein: MAPK; protein: AP1; DNA: alpha2 integrin gene; protein: mitogen-activated protein kinase
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: MAPK, AP1, alpha2 integrin gene, mitogen-activated protein kinase 
Answer:
 protein: MAPK; protein: AP1; DNA: alpha2 integrin gene; protein: mitogen-activated protein kinase