1 A nuclear envelope reforms around each chromosome set, the spindle disappears, and cytokinesis follows. 2  In animal cells, cytokinesis involves the formation of a cleavage furrow, resulting in the pinching of the cell into two cells.
Urticaria (Hives) Itchy, raised red areas on the skin. Hives are caused by a reaction to certain foods, drugs, infections, or emotional stress. Also called urticaria.
Hives are usually caused by a mild allergic reaction, but they can also be caused by a rare but severe allergic reaction called an anaphylactic reaction. Very rarely, hives can be caused by an autoimmune disorder called lupus. For more information on causes, refer to causes of hives.