615
Transient transfection assays showed that site A is necessary and sufficient for RXR alpha - mediated transactivation of the apoAI gene basal promoter in human hepatoma HepG2 cells in the presence of RA and that this transactivation is abolished by increasing amounts of cotransfected ARP - 1 .
 GENE: RXR alpha; GENE: apoAI gene basal promoter; GENE: ARP - 1
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: RXR alpha, apoAI gene basal promoter, ARP - 1 
Answer:
 GENE: RXR alpha; GENE: apoAI gene basal promoter; GENE: ARP - 1