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small groups of cells found in the pancreas that secrete the hormones insulin and glucagon.
the formation of the energy transporting molecule (ATP) to be used in the light independent...
the outermost layer of the stele or vascular cylinder in a dicotyledonous plant root. Lateral...
elongated cells in the xylem of vascular plants that transport water and mineral salts.
(also called pith rays) sections of the medulla that occur between the vascular bundles.