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Rhom-2 mRNA is expressed in early mouse development in central nervous system , lung , kidney , liver , and spleen but only very low levels occur in thymus .
 RNA: Rhom-2 mRNA; DNA: Rhom-2
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: Rhom-2 mRNA; DNA: Rhom-2