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the outermost layer of the stele or vascular cylinder in a dicotyledonous plant root. Lateral roots are formed from here.
the outer most layer of tightly packed modified parenchyma cells in plants.
a chemical messenger produced and released by a cell or a gland in one part of the body of the...
a foreign substance, usually a protein, that stimulates the production of one or more antibodies...
a system of support in soft-bodied animals, which relies on pressure of fluids in the body...
a tail-like structure that some prokaryotic and eukaryotic cells use for movement.