has part has part has_part characteristic of has modifier abnormal dentate gyrus morphology decreased dentate gyrus size 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 csmith 2013-12-04T22:39:39Z MPheno.ontology MP:0012460 reduced dentate gyrus size reduced dentate gyrus abnormal decreased size dentate gyrus of hippocampal formation