Fig. 3.

Effects of testosterone propionate on the circadian rhythms of PER2::LUC in suprachiasmatic nucleus explants. a Representative bioluminescence traces showing the effects of testosterone propionate (TP) on circadian rhythms of PERIOD2::LUCIFERASE (PER2::LUC) expression in cultured suprachiasmatic nucleus (SCN) explants from young male mice. The SCN was treated with vehicle [dimethylsulfoxide (DMSO)] or 10 μM TP. The b mean period and c amplitude values are shown for each group. Data are presented as mean ± standard error of the mean, n = 7 per group, *p < 0.05, for vehicle vs TP (Student’s t-test)