has soma location has soma location hippocampal neuron hippocampal CA1-3 neuron It is unclear as to if the modelling of Ammon's horn includes CA4 (which could be considered part of the dentate gyrus) in Uberon, hence no equivalent class axiom was made. A neuron that has its soma located in CA1-3 of the hippocampus. Homo sapiens Ammon's horn