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 a very common reaction to all kinds of stimuli. While an allergic reaction can be a cause of hives, in the majority of outbreaks, the exact cause of hives is not known.