Gregory J. Morrissette

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The origin of TCR-alphabeta+ CD4-CD8- cells is unclear, yet accumulating evidence suggests that they do not represent merely a default pathway of unselected thymocytes. Rather, they arise by active selection as evidenced by their absence in mice lacking expression of class I MHC. TCR-alphabeta+ CD4-CD8- cells also preferentially accumulate in mice lacking(More)
OBJECTIVE To evaluate the impact of intraoperative transesophageal echocardiography on type-A acute aortic dissection. DESIGN Retrospective observational study. SETTING Tertiary care hospital. PARTICIPANTS Sixty-four consecutive patients with type-A aortic dissection. INTERVENTIONS Surgeons interviewed regarding how transesophageal echocardiography(More)
Little is understood of the anatomical fate of activated T lymphocytes and the consequences they have on the tissues into which they migrate. Previous work has suggested that damaged lymphocytes migrate to the liver. This study compares class I versus class II major histocompatibility complex (MHC)-restricted ovalbumin-specific T cell antigen receptor (TCR)(More)
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