Representative images of OXT gene expression in the PVN (Figure 7A) and SON (Figure 7B) in untreated (Figure 7A, B‐a), saline‐administered (Figure 7A, B‐b, c), HTN‐administered (Figure 7A, B‐e, f) and PEG‐administered (Figure 7A, B‐g, h) rats at 3 and 6 hr after treatment are shown. The gene discussed is OXT; the disease is hypertensive disorder.