Distribution of VEGF-positive cells in the HVC.

<p>A–H: VEGF-positive cells at 15 post-hatching days (P15, A–D) or at adulthood (E–H). I: Comparison of the number of VEGF-positive cells in the developing HVC between the two sexes at P15 and adult. Scale bar = 200 µm (A and B), 500 µm (E, F), and 100 µm (C, D, G, H).</p>