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The Thy-1 gene promoter resembles a "housekeeping" promoter in that it is located within a methylation-free island , lacks a canonical TATA box , and displays heterogeneity in the 5'-end termini of the mRNA .
 DNA: canonical TATA box; DNA: "housekeeping" promoter; DNA: methylation-free island; RNA: 5'-end termini; DNA: Thy-1 gene promoter; RNA: 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:
 DNA: canonical TATA box; DNA: "housekeeping" promoter; DNA: methylation-free island; RNA: 5'-end termini; DNA: Thy-1 gene promoter; RNA: mRNA