4656
In this study we evaluated the expression of NK ( 1 ) and NK ( 2 ) receptors ( NK - 1R and NK - 2R ) , as well as the effects of substance P ( SP ) and neurokinin A ( NKA ) , in monocytes isolated from 15 healthy subjects and 15 patients with recurrent major depressive disorder ( RMDD ) , under stable antidepressant therapy .
 Chemical: substance P; Chemical: neurokinin A; Chemical: NKA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: substance P; Chemical: neurokinin A; Chemical: NKA