title: Plasma and spinal-fluid blocking factor in SSPE.
mesh_terms: D000936:Antigen-Antibody Complex; D000956:Antigens, Viral; D002464:Cell Migration Inhibition; D006801:Humans; D007111:Immunity, Cellular; D008214:Lymphocytes / Q000276:immunology; D008459:Measles virus / Q000276:immunology; D013344:Subacute Sclerosing Panencephalitis / Q000097:blood / Q000134:cerebrospinal fluid / Q000276:immunology*
chemical_list: D000936:Antigen-Antibody Complex; D000956:Antigens, Viral