1425
In contrast to parental U937 cells , PKC-zeta cells constitutively expressed mRNA transcripts for c-jun and a low mobility AP-1 binding activity .
 cell line: PKC-zeta cells; RNA: mRNA; RNA: mRNA transcripts; DNA: c-jun; protein: AP-1; cell line: U937 cells; protein: PKC-zeta
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: PKC-zeta cells, mRNA, mRNA transcripts, c-jun, AP-1, U937 cells, PKC-zeta 
Answer:
 cell line: PKC-zeta cells; RNA: mRNA; RNA: mRNA transcripts; DNA: c-jun; protein: AP-1; cell line: U937 cells; protein: PKC-zeta