2
The HB24 mRNA was absent or present at low levels in normal B and T lymphocytes ; however, with the appropriate activation signal HB24 mRNA was induced within several hours even in the presence of cycloheximide .
 RNA: HB24 mRNA; cell type: T lymphocytes; RNA: HB24 mRNA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 RNA: HB24 mRNA; cell type: T lymphocytes; RNA: HB24 mRNA