abnormal double-positive T cell morphology increased T cell number increased double-positive T cell number MP:0005091 MPheno.ontology greater than the expected number of the subset of T cells found in the thymus that express both CD4 and CD8 increased CD4+CD8+ T cell count increased CD4+CD8+ T cell numbers increased double positive T cell number increased double-positive T cell count increased double-positive T cell numbers increased double-positive T-cell numbers