“…,SERT−/− rats showed a strong impairment of the GABAergic system , as indicated by the reduction of several markers, including the vesicular transporter (Vgat), glutamic acid decarboxylase-67 (Gad67), the receptor subunit GABA A receptor, gamma 2 (GABAA-γ2), and calcium-binding proteins that label subgroups of the GABAergic neurons.”