<prompt> In depression, there is deficiency of:5-HTAcetylcholineDopamineGABA  <response>: Ans. A 5-HTRef: Katzung 10e p475; KDT 8e p483Monoamines like serotonin and nor-adrenaline are deficient in depressive patients, therefore reuptake inhibitors of these monoamines are used for treatment of depression. 