The significance of glycogen in large amounts, or of its absence from the tissues in pathological conditions, is not clearly understood.
The protoplasm remaining over is termed epiplasm and often contains glycogen (fig.
Arsenic and antimony do not form combinations with albumen, but they both greatly depress the central nervous system and circulation; and, if their action be long continued in large doses, they cause fatty degeneration of the viscera and disappearance of glycogen from the liver.
Maltose, malt-sugar, maltobiose, C12H22011, is formed, together with dextrine, by the action of malt diastase on starch, and as an intermediate product in the decomposition of starch by sulphuric acid, and of glycogen by ferments.
In other forms a substance (probably glycogen or amylo-dextrin) which turns brown with iodine has been observed.