RT Journal Article SR Electronic T1 Nerve growth factor concentrations in human cerebral blood vessels. JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 199 OP 200 DO 10.1136/jnnp.62.2.199 VO 62 IS 2 A1 P Anand A1 A Parrett A1 L Chadwick A1 P Hamlyn YR 1997 UL http://jnnp.bmj.com/content/62/2/199.abstract AB