CYP27B1 and infection: At the 48 h post-infection time point, there was an increased relative expression of CYP27B1 and VDR (1.62 ± 0.32 and 1.27 ± 0.34, respectively) (Figure 1D,E) and a decreased relative expression of CAMP (0.29 ± 0.15) (Figure 1F).