1683
These findings suggest a molecular mechanism of positive regulation of PAFR gene expression by PAF through NF-kappa B , possibly by a phosphorylation reaction involving protein kinase C by PAF .
 protein: PAF; protein: NF-kappa B; protein: PAFR; protein: PAF; protein: protein kinase C
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: PAF, NF-kappa B, PAFR, PAF, protein kinase C 
Answer:
 protein: PAF; protein: NF-kappa B; protein: PAFR; protein: PAF; protein: protein kinase C