4963
However , in transient transfection assays , a truncation of as little as 15 Nurr1 COOH - terminal amino acids diminished transcriptional activation of B1A - thymidine kinase - chloramphenicol acetyltransferase reporter .
 GENE: Nurr1; GENE: B1A; GENE: thymidine kinase; GENE: chloramphenicol acetyltransferase
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: Nurr1; GENE: B1A; GENE: thymidine kinase; GENE: chloramphenicol acetyltransferase