800
Using deletion mutants and cis-cloned synthetic oligodeoxyribonucleotides in transient expression assays , nucleotide sequences responsible for this effect have now been further delimited to 44 bp located from -294 to -251 bp .
 DNA: -294 to -251 bp; DNA: deletion mutants
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: -294 to -251 bp; DNA: deletion mutants