Cell-sized microspheres in the hippocampus show cleavage planes and passive displacement

J Wells, BP Vietje, DG Wells, ME Dunn - Brain research bulletin, 1988 - Elsevier
Fluorescent microspheres (6 or 10 μm in average diameter) dispersed in fluid were injected
into the hippocampus, neocortex or striatum. In the hippocampus the microspheres were
located in one of three cleavage planes. Cleavage planes were found above the alveus, in
the obliterated hippocampal fissure and on the hilar side of the dentate granule cells. When
the injections were made into the infragranular cleavage plane, the adjacent granule cells
degenerated, presumably because the cavity separated the axons from their cell bodies …