FIGURE 7.
Immunogold staining of JIM11 epitope in the symbiotic protocorms of D. officinale. (A) In the apical portion of the protocorm, no immunogold particles were observed. Scale bar = 1 μm. (B) TEM of a basal portion of protocorm cell with fungal hyphae (H). Labeling occurred in the host cell wall (CW) and the interfacial matrix (arrowhead) or fungal cell wall. Scale bar = 1 μm. (C) TEM of a portion of protocorm cell with collapsed fungal hyphae (H). Scale bar = 1 μm. (D) The control staining. Thin sections were incubated with the mouse pre-immune IgG instead of JIM11 antibody. Immunogold particles were absent in these treatments. Scale bar = 1 μm.