Number of c-Fos + neurons per mm 2 ( j ), in mice injected with biotin + saline versus biotin + psilocybin ( n = 5 mice per condition; P = 0.42, U = 8, two-tailed Mann–Whitney U test ( j )). All scale bars, 50 µm. Data are plotted as the mean ± s.e.m. in e and j – l. ** P < 0.01, *** P < 0.001. Psilo., psilocybin.
