the concentration of carcinoembryonic antigen ( cea ) in cerebrospinal fluid ( csf ) was determined by using an enzyme immunoassay for 204 patients with various nonneoplastic neurologic disorders , 8 patients with systemic infectious diseases , 19 patients with systemic neoplastic diseases without involvement of the nervous system , and 35 patients with neoplastic neurologic disorders .
C1335024
nonneoplastic neurologic disorders
C0027763
nervous system