2738
Dopamine D2 receptors were elevated in the striatum , whereas serotonin 2C , but not serotonin 1A , receptors were elevated in the orbital frontal cortex .
 Chemical: Dopamine; Chemical: serotonin; Chemical: serotonin
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: Dopamine, serotonin, serotonin 
Answer:
 Chemical: Dopamine; Chemical: serotonin; Chemical: serotonin