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Transmission electron microscopy (TEM) micrographs of the ultrastructure of the upper (a,c,e,g) and lower (b,d,f,h) epidermises of Vinca leaves. (a,b) V. minor, (c,d) V. major, (e,f) V. major var. variegata, (g,h) V. herbacea; white delimitations represent the cell wall of the epidermal cells, and black delimitations represent the cuticular layers; double arrowheads indicate the epicuticular waxes.
