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.
Causes of Hives in Adults. Hives, also called urticaria, appear as itchy, red welts on the surface of the skin and are usually caused by an allergic reaction. Hives in adults start suddenly and go away quickly, can vary in size, appear anywhere on the body, and can move around on the body throughout the course of the reaction. Allergic Reaction.