Plate 3

Fig. 1: Sagittal 0.5μ section caudal parenchyma. MBAII stain, phase contrast photomicrograph × 1,750. Cells present include those with stranded cytoplasm (arrows) and pale granules (G). B, basiphil secretion.

Fig. 2: Sagittal 0.5μ section cephalic parenchyma, at base of brain. MBAII stain, phase contrast photomicrograph × 2,200.

B, basiphil secretion; C, cell with stranded cytoplasm; D, dorsoventral muscle fibres; N, nerve cells.