The outermost layer of endosperm, the aleuron-layer, consists of regular cells filled with small proteid granules; the rest is made up of large polygonal cells containing numerous starch-grains in a matrix of proteid which may be continuous (horny endosperm) or granular (mealy endosperm).
The outermost layer of the endosperm consists of square cells larger and more regular in form than those on each side; these contain aleuron grains - small particles of gluten or nitrogenous matter.
In nitrogen than the com B, Cells containing aleuron or gluten mon and turgid wheats, so grains.
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