Volume 70, no. 8, p. 4556-4563, 2002. Page 4556: The receipt, modification, and accept dates should appear as shown above.
Page 4557, column 2, lines 14 to 16 from bottom: “Human brain tissue was obtained from the leftover tissues devoid of any pathological condition from children who underwent surgery for seizure disorders at Childrens Hospital at Los Angeles” should read “Human brain tissue devoid of any pathological condition from postmortem samples of brain tumor patients was obtained from the Pathology Department at Childrens Hospital Los Angeles.”
Page 4561, Fig. 7: Panels G and H should appear as shown below.
Page 4563, Acknowledgments, line 5: The following sentence was inadvertently omitted. “I thank Ignacio Gonzalez, Pathology Department, Childrens Hospital Los Angeles, for providing brain tissue sections.”