Increased expression of the 5-HT transporter confers a low-anxiety phenotype linked to decreased 5-HT transmission. - Jennings KA; Loder MK; Sheward WJ; Pei Q; Deacon RM; Benson MA; Olverman HJ; Hastie ND; Harmar AJ; Shen S; Sharp T (The Journal of neuroscience : the official journal of the Society for Neuroscience, 2006)