1438
Absolute hTR beta 1 mRNA levels are very low with an estimated one molecule of mRNA being present in a mononuclear blood cell or thyrocyte .
 protein: hTR beta 1; cell type: mononuclear blood cell; RNA: mRNA; RNA: hTR beta 1 mRNA; cell type: thyrocyte
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:
 protein: hTR beta 1; cell type: mononuclear blood cell; RNA: mRNA; RNA: hTR beta 1 mRNA; cell type: thyrocyte