part of part of Mus musculus retrohippocampal region Hippocampal formation Basic cell groups and regions Retrohippocampal region http://atlas.brain-map.org/atlas?atlas=2#structure=822 RHP Retrohippocampal region ( mouse ) http://atlas.brain-map.org/atlas?atlas=1#structure=822 http://atlas.brain-map.org/atlas?atlas=602630314#structure=822 RHP