measles virus-specific antibodies were isolated from sera , cerebrospinal fluids ( csf ) , and brain extracts of patients with subacute sclerosing panencephalitis ( sspe ) and multiple sclerosis ( ms ) by absorption with measles antigens and subsequent acid elution of the antigen-antibody precipitates .
C0006104
brain
C0038522
subacute sclerosing panencephalitis