a. Phase-contrast micrograph of a growing hypha. Scale bar = 10
b. Phase-contrast micrograph of the same hypha shown in Fig. 10a after CE treatment and aldehyde fixation. Note the phase-light persistent core is partially occluded from view by a group of mitochondria. Scale bar = 10 µm.
c. Electron micrograph of a near median thin section of the same hypha shown in fig 10b. Note the clusters of smooth ER tubules (ser) shown enlarged here. The phase-light persistent core region in fig. 10b corresponds to a region (arrowheads) lacking the cluster of apical vesicles (enlargement here) in the electron micrograph. Scale bar = 1 µm.