855
Peroxisome proliferator - activated receptors ( PPARs ) and retinoid X receptors ( RXRs ) are nuclear hormone receptors that are activated by fatty acids and 9 - cis - retinoic acid , respectively .
 GENE: Peroxisome proliferator - activated receptors; GENE: PPARs; GENE: retinoid X receptors; GENE: RXRs; GENE: nuclear hormone receptors
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: Peroxisome proliferator - activated receptors; GENE: PPARs; GENE: retinoid X receptors; GENE: RXRs; GENE: nuclear hormone receptors