{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T03:26:02Z","timestamp":1789615562766,"version":"build-2803163510"},"reference-count":52,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2016,10,4]],"date-time":"2016-10-04T00:00:00Z","timestamp":1475539200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Hippocampus"],"published-print":{"date-parts":[[2016,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>The avian hippocampal formation differs considerably from that of mammals both in terms of position and cytoarchitecture. On the basis of fiber connections in pigeons, however, we previously proposed that the dorsomedial subdivision (DM) and the V\u2010shaped layer of the hippocampal formation correspond to Ammon's horn and the dentate gyrus of mammals, respectively. In the present study, we provide evidence in support of this hypothesis by double staining hippocampal neurons using tract\u2010tracing and gene expression. After cholera toxin subunit B (CTB) was injected into the lateral septal nucleus (SL), and vesicular glutamate transporter 2 (vGluT2) mRNA, a gene marker for glutamatergic neurons, was visualized in the same retrogradely labeled neurons with <jats:italic>in situ<\/jats:italic> hybridization, most CTB+\/<jats:italic>vGluT2<\/jats:italic>+ neurons were concentrated in DM, but were rare in the V\u2010shaped layer. The distribution pattern of CTB+\/<jats:italic>vGluT2<\/jats:italic>+ neurons in the hippocampal formation did not change when CTB injection sites were shifted in a rostrocaudal direction in SL. SL expresses a variety of mRNAs for ionotropic glutamate receptor subunits (GluA1, GluA2, GluK2, GluK4, and GluN1). The findings indicate that DM neurons provide descending glutamatergic axons to SL. Additionally, the present study showed that Prox1 mRNA, a gene marker for the dentate gyrus in mammals, was intensely expressed in the V\u2010shaped layer in the pigeon hippocampus. Together these results strengthen our original hypothesis that DM and the V\u2010shaped layer in the pigeon hippocampus are homologous to Ammon's Horn and the dentate gyrus, respectively. \u00a9 2016 Wiley Periodicals, Inc.<\/jats:p>","DOI":"10.1002\/hipo.22660","type":"journal-article","created":{"date-parts":[[2016,9,22]],"date-time":"2016-09-22T23:19:53Z","timestamp":1474586393000},"page":"1608-1617","source":"Crossref","is-referenced-by-count":36,"title":["Proposed homology of the dorsomedial subdivision and V\u2010shaped layer of the avian hippocampus to Ammon's horn and dentate gyrus, respectively"],"prefix":"10.1002","volume":"26","author":[{"given":"Yasuro","family":"Atoji","sequence":"first","affiliation":[{"name":"Laboratory of Veterinary Anatomy Faculty of Applied Biological Sciences Gifu University Gifu Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sonjoy","family":"Sarkar","sequence":"additional","affiliation":[{"name":"Laboratory of Veterinary Anatomy Faculty of Applied Biological Sciences Gifu University Gifu Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. Martin","family":"Wild","sequence":"additional","affiliation":[{"name":"Department of Anatomy and Medical Imaging Faculty of Medical and Health Sciences University of Auckland Auckland New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,10,4]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1093\/cercor\/bhp242"},{"key":"e_1_2_6_3_1","first-page":"8","article-title":"Combinatorial expression of Lef1, Lhx2, Lhx5, Lhx9, Lmo3, Lmo4, and Prox1 helps to identify comparable subdivisions in the developing hippocampal formation of mouse and chicken","volume":"4","author":"Abell\u00e1n A","year":"2014","journal-title":"Front Neuroanat"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.903010303"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0079-6123(07)63001-5"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.22663"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.exer.2015.05.005"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.20186"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.20490"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1515\/REVNEURO.2006.17.1-2.3"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.22146"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.22763"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.23504"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.10239"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.21042"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1159\/000113635"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/0471733849.ch30"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-12-374245-2.00020-6"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.902450403"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.903140306"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00239445"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1113\/jphysiol.2001.012959"},{"key":"e_1_2_6_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tins.2003.11.005"},{"key":"e_1_2_6_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuroscience.2007.02.002"},{"key":"e_1_2_6_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ydbio.2012.03.027"},{"key":"e_1_2_6_26_1","doi-asserted-by":"publisher","DOI":"10.1002\/hipo.20006"},{"key":"e_1_2_6_27_1","doi-asserted-by":"crossref","DOI":"10.1523\/JNEUROSCI.21-22-j0001.2001","article-title":"The existence of a second vesicular glutamate transporter specifies subpopulations of glutamatergic neurons","volume":"21","author":"Herzog E","year":"2001","journal-title":"J Neurosci"},{"key":"e_1_2_6_28_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.23851"},{"key":"e_1_2_6_29_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.23549"},{"key":"e_1_2_6_30_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.21871"},{"key":"e_1_2_6_31_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.10601"},{"key":"e_1_2_6_32_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.23522"},{"key":"e_1_2_6_33_1","first-page":"195","volume-title":"A Stereotaxic Atlas of the Brain of the Pigeon (Columba livia)","author":"Karten HJ","year":"1967"},{"key":"e_1_2_6_34_1","doi-asserted-by":"publisher","DOI":"10.1038\/nrn3319"},{"key":"e_1_2_6_35_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.900690207"},{"key":"e_1_2_6_36_1","doi-asserted-by":"publisher","DOI":"10.1002\/dvdy.21024"},{"key":"e_1_2_6_37_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0079-6123(07)63008-8"},{"key":"e_1_2_6_38_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00186251"},{"key":"e_1_2_6_39_1","doi-asserted-by":"publisher","DOI":"10.1007\/s004410050537"},{"key":"e_1_2_6_40_1","doi-asserted-by":"publisher","DOI":"10.1002\/cne.21837"},{"key":"e_1_2_6_41_1","doi-asserted-by":"publisher","DOI":"10.3389\/fnana.2015.00053"},{"key":"e_1_2_6_42_1","doi-asserted-by":"publisher","DOI":"10.1101\/lm.687407"},{"key":"e_1_2_6_43_1","volume-title":"The Chick Brain in Stereotaxic Coordinates. 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