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An iron-responsive element (IRE) motif has been identified in the 5'-untranslated region of the human erythroid ALAS mRNA , but is not present in the housekeeping ALAS mRNA .
 RNA: human erythroid ALAS mRNA; RNA: iron-responsive element (IRE) motif; DNA: iron-responsive element; RNA: housekeeping ALAS 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: human erythroid ALAS mRNA; RNA: iron-responsive element (IRE) motif; DNA: iron-responsive element; RNA: housekeeping ALAS mRNA