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Ultrastructural organization of the epidermis. Electron microscopic images of ultra-thin sections of the outer cell wall in the upper leaf epidermis were obtained for the wild type (A), rwa2-1 (B), and rwa2-3 (C). The cuticle layer is indicated by the white arrowheads. The electron dense deposits are indicated by black arrowheads. All scale bars equal 500 nm.
