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.
Other triggers that may cause hives include: 1  Sunlight. 2  Heat. 3  Cold. 4  Constricting clothing. 5  Anxiety or stress. 6  Exercise. 7  Insect stings/bites. 8  Recent (viral) infections. 9  Contact with chemicals. 10  Scratching your skin.