Part of hippocampus proper bounded by areas CA3 and CA1, characterized by a narrow layer of large pyramidal cells, similar in size to CA3 pyramidal cells, but which lack the mossy fiber input from the dentate gyrus (adapted from Paxinos, G. The rat central nervous system, 2nd ed, Academic Press, San Diego, 1995, pg. 460).
Synonyms:
exact_synonym:
CA2; CA2 field of Ammon's horn; CA2 field of cornu ammonis; hippocampus CA2; regio ii cornus ammonis; regio ii hippocampi proprii; region 2 of Ammon's horn; region ii of ammon's horn; region ii of hippocampus proper
related_synonym:
CA2 field of the Ammon horn; CA2 field of the hippocampus; cornu Ammonis 2; field CA2; field CA2, Ammon's horn (Lorente de Ns); region CA2