to test the hypothesis that host resistance factors may be abnormal in guamanians in whom amyotrophic lateral sclerosis and parkinsonism-dementia develop , cellular immunity was evaluated in both diseases and compared to that of guamanians with other nervous-system diseases , normal adult guamanians and non-guamanians with amyotrophic lateral sclerosis and parkinsonism .
C0012634
diseases
C0027765
nervous-system diseases