12677
We cloned and characterized a fork head cDNA from human T helper cell mRNA using differential display RT-PCR .
 RNA: human T helper cell mRNA; DNA: fork head cDNA
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: human T helper cell mRNA, fork head cDNA 
Answer:
 RNA: human T helper cell mRNA; DNA: fork head cDNA