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In erythroid K562 cells in which the HS2 enhancer is active, the HS2 sequence directs the synthesis of long enhancer transcripts that are initiated apparently from within the enhancer and elongated through the intervening DNA into the cis-linked CAT gene .
 DNA: HS2 enhancer; DNA: cis-linked CAT gene; DNA: HS2 sequence; cell line: erythroid K562 cells; DNA: enhancer
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: HS2 enhancer; DNA: cis-linked CAT gene; DNA: HS2 sequence; cell line: erythroid K562 cells; DNA: enhancer