Fig. 1: 5-HTT availability in total gray matter (BPND).
From: Serotonin transporter availability in adults with autism—a positron emission tomography study

Individual values and group mean. Error bars show ±1 SD. Subjects with ASD and control subjects. ASD BPND mean [SD] 0.27 [0.05], control BPND 0.32 [0.05], p = 0.004, paired-sample t test.