1391
Yohimbine has high affinity for the α-adrenergic receptor , moderate affinity for the α receptor , 5-HT , 5-HT , 5-HT , 5-HT , 5-HT , and dopamine D receptors , and weak affinity for the 5-HT , 5-HT , 5-HT , 5-HT , and dopamine D receptors .
 location: 5-HT
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: 5-HT