14176
Although there were differences in affinities of a few compounds at mouse compared to human 5 - HT2A or 5 - HT2C receptors , all compounds tested retained their selectivity for either receptor , regardless of receptor species .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None