4691
This enhancer element functioned in a position - and orientation - independent manner both on the Pax - QNR P0 promoter and the heterologous thymidine kinase promoter .
 GENE: Pax - QNR P0 promoter; GENE: heterologous thymidine kinase promoter
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: Pax - QNR P0 promoter; GENE: heterologous thymidine kinase promoter