1. From the Departments of Neuropathology (M.O.M., J.A.R.N.) and Neurology (K.W.M., I.B.), Institute of Neurological Sciences, Southern General Hospital; and Acute Stroke Unit, Department of Medicine and Therapeutics, Gardiner Institute, Western Infirmary (C.J.W., A.G.D., K.R.L.), Glasgow, Scotland.