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Direct cytotoxicity by class II-restricted T cells has been proposed as a potential mechanism in autoimmune tissue damage, as well as in immunoregulation. We used I-A(s)-restricted non-granular(More)
We describe a case of congenital ependymoblastoma presenting as a subcutaneous mass in the sacrococcygeal area of a newborn male. The tumor was composed of primitive cells disposed in compact sheets(More)