Photomicrographs of the HF at different levels.

<p><b>A-C</b> Photomicrographs of a rostral (A), a medium (but still part of the rostral pole; B), and a caudal (C) coronal section through the hippocampal formation (HF). <b>D.</b> BrdU⁺/Hu⁺ (white arrow), BrdU⁺/Hu^- (black arrow), and BrdU^-/Hu⁺ (open arrows) cells from the rostral section of the HF. <b>E.</b> BrdU⁺ cell in the ventricular wall of the caudal section of the HF. The scale bar in C applies to A and B as well. The scale bar in D also applies to E.