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Fig. 2. Immunogold-labeled CDP II in a near median longitudinal section of hyphal
apex of Allomyces arbuscula seen in an electron micrograph. (A)
General view showing an apico-basal gradient of the enzyme. 1-5 correspond to
the zones used for quantification of labels (see
Table 2). (B) Higher
magnification of the proximal tip region corresponding to zone 1. (C) Higher
magnification of the distal region corresponding to zone 3 rich in
mitochondria. (D) Higher magnification of zone 4 with nuclei. m, mitochondria;
v, vacuole; n, nucleus.