Having a bluish gray waxy surface. Spherical, or nearly so. The result of the Gram stain. An important bacteriological staining procedure discovered empirically in 1884 by the Danish scientist Christian Gram. Cells of Gram-positive species resist decolorization.
Position varies among the genera from near apex to posterior portion of stylet.
A plant disease in which the lesions exude a sticky liquid. Exudation of water from plants, particularly along the leaf margin.