Fig. 1
Location of gene polymorphisms. Representative gene structure, location of exons, and polymorphisms in (a) HTR3A serotonin 5-HT3A receptors, (b) HTR3B serotonin 5-HT3B receptors, (c) HTR3C serotonin 5-HT3C receptors, (d) TACR1 neurokinin-1 receptors, (e) DRD2 dopamine D2 receptors, and (f) COMT catechol-O-methyltransferase. For all polymorphisms, the accession numbers of the dbSNP database are indicated