9295
We used reverse transcriptase -polymerase chain reaction to examine both fetal and term neonatal cord bloods for mRNA expression of three transcription factors implicated in T-cell activation : c-jun , c-fos , and NF kappa B ( p50 subunit ).
 protein: reverse transcriptase; protein: c-fos; protein: p50 subunit; protein: transcription factors; protein: NF kappa B; protein: c-jun
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: reverse transcriptase, c-fos, p50 subunit, transcription factors, NF kappa B, c-jun 
Answer:
 protein: reverse transcriptase; protein: c-fos; protein: p50 subunit; protein: transcription factors; protein: NF kappa B; protein: c-jun