paired serum and cerebrospinal fluid specimens from 19 patients with sle and central nervous system dysfunction were studied with respect to cerebrospinal fluid igg index ( a measure of intrathecal igg synthesis ) , isoelectric focusing using immunoperoxidase staining techniques to detect oligoclonal igg , and determination of the cerebrospinal fluid/serum albumin quotient ( q albumin ) as a measure of blood-brain barrier integrity .
C0036773
serum albumin
C0001924
albumin