1823
It is hypothesized this occurs through antagonism of PML / RAR alpha actions in these leukemic cells .
 GENE: PML; GENE: RAR alpha
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: PML; GENE: RAR alpha