Animals 4 Anxiety 4 Anxiety-related behavior 4 Depression 4 Female 4 Male 4 animal 4 animal experiment 4 anxiety 4 anxiety disorder 4 article 4 depression 4 female 4 male 4 mouse 4 nervous system development 4 nonhuman 4 priority journal 4 Age Factors 2 Behavior, Animal 2 Cell Proliferation 2 Decision Making 2 Dentate Gyrus 2 Depressive-related behavior 2 Exploratory Behavior 2 Growth 2 Hippocampus 2 Knockout mouse 2 Lactation 2 Maternal Behavior 2