1908
Deletion mutagenesis of the promoter indicated that a positive regulatory element ( PRE ) was likely to exist downstream of the UL94 mRNA start site , while a negative regulatory element ( NRE ) was present upstream of the TATA box .
 GENE: UL94 mRNA start site
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: UL94 mRNA start site