abnormal dentate gyrus morphology decreased dentate gyrus size MP:0012460 reduced size of one of two interlocking gyri of the hippocampus formation that contains granule cells, which project to the pyramidal cells and interneurons of the CA3 region of the ammon gyrus reduced dentate gyrus size csmith 2013-12-04T22:39:39Z reduced dentate gyrus MPheno.ontology