9455
Electrophoretic mobility shift assays show that the nucleoprotein complex formed on the upstream site ( NF kappa B1 ) contains the classical p50/p65 heterodimer .
 protein: classical p50/p65 heterodimer; protein: NF kappa B1; protein: nucleoprotein complex; DNA: upstream site
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: classical p50/p65 heterodimer, NF kappa B1, nucleoprotein complex, upstream site 
Answer:
 protein: classical p50/p65 heterodimer; protein: NF kappa B1; protein: nucleoprotein complex; DNA: upstream site