HEGCs were about as likely as normotopic dentate granule cells to project to area CA3 neurons within the slice (A). Mossy fibers of HEGCs (D,E), like those of granule cells from control rats (B) and GC-SEs (C), had widely spaced giant boutons in stratum lucidum from which filopodia emerged (arrows). Quantitative data were derived from microscopic observation of 55 HEGCs, 32 GC-SEs, and 33 CGCs. CGC, normotopic granule cells from control rats; GC-SE, normotopic granule cells from rats that had experienced status epilepticus; HEGC, hilar ectopic granule cells from rats that had experienced status epilepticus; P, pyramidal cell body layer. Scale bar = 200 μm.