immune system AE antinuclear antibody present AE anti-nuclear factor present The presence of anti-nuclear antibodies (ANAs) that are antibodies directed against contents of the cell nucleus. ANAs are present in higher than normal numbers in autoimmune disease. The ANA test measures the pattern and amount of autoantibody which can attack the body's tissues as if they were foreign material. Autoantibodies are present in low titers in the general population, but in about 5% of the population, their concentration is increased, and about half of this 5% have an autoimmune disease. According to the Vaccine Adverse Event Reporting System (VAERS), 'antinuclear antibody present'; is an adverse event that was mentioned in 288 VAERS reports (0.2%) during1991-2001 (Reference: PMID: 12825543). 抗核抗体阳性 YH an immune system disorder AE which has an outcome of antinuclear antibody present