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  • Title: Lymphocytes in thymoma: association with myasthenia gravis is correlated with increased number of single-positive cells.
    Author: Fujii Y, Hayakawa M, Inada K, Nakahara K.
    Journal: Eur J Immunol; 1990 Oct; 20(10):2355-8. PubMed ID: 2147007.
    Abstract:
    In the normal thymus the number of lymphocytes and the proportion of CD4+CD8+ double-positive cells decrease as a function of age. Six thymomas in elderly patients without myasthenia gravis had a large number of double-positive T cells, as seen in the normal thymic cortex. This suggests that the epithelial cells of thymoma have the function of cortical epithelium and can induce precursor T cells to differentiate to the double-positive stage but not further. In seven thymomas with associated myasthenia gravis, however, there was a conspicuous population of mature single-positive T lymphocytes. These mature T cells may include autoreactive T cells.
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