372
The natural ligands for the RARs are ATRA and its stereoisomers 9 - cis - RA and 13 - cis - RA , whereas RXRs are activated by 9 - cis - RA only .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities:  
Answer:
 None