Figure 1. Hipocampal neurons of Calidris pusilla. Coronal series of NeuN-immunolabeled sections of the C. pusillahippocampal formation. The left to right sequence is from the frontal to the occipital pole of the hippocampal formation. In the first sections of the top and bottom rows, the dark line defines the area of interest. The arrowheads indicate limits of the area of interest. The arrows indicate the paraventricular sulcus. APH: parahippocampal area; Hp: hippocampus. Scale bar: 500 µm. Photomicrography with 10× magnification of the ventral region of the dorsomedial hippocampus of C. pusillashows three distinct layers: layer I contains a few scattered neurons; layer II is formed by two or three rows of densely packed neuronal cell bodies; layer III contains a less compact more scattered arrangement of neurons. Scale bar: 100 µm.