Figure 2From: Serotonin 5-HT2A and 5-HT6 receptors in the prefrontal cortex of Alzheimer and normal aging patientsCell densities. Numerical density of 5-HT2A and 5-HT6 receptor immunoreactive neurons in the prefrontal cortex of normal aging (n=7) and Alzheimer (AD) patients (n=6). Depicted are means ± SEM. Significant differences (p ≤ 0.05) are marked by an asterisk (*)Back to article page