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 typically caused by an allergic reaction. The allergy can be to a food or medication. When your body is allergic to something, it can release chemicals that make your skin develop hives. An infection or emotional stress can also cause hives.