In the novel object recognition test, the reduced preference for the novel object was rescued by PACAP application, indicating that recognition memory was rescued (Con vs. CRS: p = 0.0172, CRS vs. CRS + PACAP: p = 0.0475, One‐way ANOVA test, Tukey test for multiple comparisons corrections; Figure 5M). This evidence concerns the gene ADCYAP1 and congenital rubella syndrome.