E Spine densities were comparable between experimental groups at 3dpT [iML p=0.1512, oML p=0.3841]. 13dpT β-catex3 iDCX neurons showed significantly increased spine density in the inner molecular layer [iML p<0.0001 , oML p=0.0402] (3dpT: control: n= 20 cells from 3 animals, β-catex3 iDCX: n= 20 cells from 4 animals; 13dpT control: n= 20 cells from 5 animals, β-catex3 iDCX: n= 20 cells from 7 animals). Representative images showing dendritic segments in the inner molecular layer of the DG at 13dpT. Scale bars= 1µm. 