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A-D. AM fungal colonization structures within the roots of Cucumis sativus. A, B (Higher magnification): Root fragment densely colonized by intact spores (IS) with subtending hyphae (SH) showed by arrow. C: subtending hyphae (SH), vesicle (V) and hyphal coils (HC) showed by arrow. D: Plant cell (PC), cell wall (CW), intraradical hyphae (IH), arbuscules (Ar), arbuscular trunk (AT) and appressorium (Ap) showed by arrow. Bar: 50 μm.
