12006
Northern analyses showed similar levels of two elf-2 transcripts (3.5 kb and 3.8 kb) in all tissues except thymus.
 protein: elf-2; RNA: elf-2 transcripts
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: elf-2, elf-2 transcripts 
Answer:
 protein: elf-2; RNA: elf-2 transcripts