High-resolution T1-weighted MR images of ventral hippocampus infusions. (A) Schematic of key structures in the ventral hippocampus adapted from (Paxinos and Watson, 1998). (B-H) MR image coronal slice of ventral hippocampus infusions into 7 rats. Filled arrow heads, dentate gyrus granule cell layer; unfilled arrow heads, CA1 pyramidal cell layer; asterisk, hippocampal fissure, filled arrow, alveus; unfilled arrow, corpus collosum.