n. 1  Any of various small proteins that are produced by a variety of cell types, especially T cells and other white blood cells, and that regulate many aspects of inflammation and the immune response, including stimulating the production of white blood cells and platelets.
Arrowroot is an easily digested starch extracted from the roots of the arrowroot plant, Maranta arundinacea. The starch is used as a thickener in many foods such as puddings and sauces, and is also used in cookies and other baked goods. It is extremely bland, making it suitable for neutral diets, especially for people who are feeling nauseous.
For other uses, see Arrowroot (disambiguation) . Arrowroot is a starch obtained from the rhizomes (rootstock) of several tropical plants, traditionally Maranta arundinacea, but also Florida arrowroot from Zamia integrifolia, and tapioca from cassava (Manihot esculenta), which is often labelled as arrowroot.he lack of gluten in arrowroot flour makes it useful as a replacement for wheat flour in some baking uses. Like other pure starches, however, arrowroot is almost pure carbohydrates and devoid of protein, thus it does not provide a complete substitute for wheat flour for bread-making, which requires gluten.