phenotype affects entity CD8-positive, alpha-beta T cell abnormal effector T cell morphology abnormal CD8-positive, alpha beta T cell morphology Generally, when immunologists write CD8 positive T cell, what they mean is CD8-positive, alpha-beta T cell (CL:0000625). Similarly, when immunologists write CD4 positive T cell, what they mean is CD4-positive, alpha-beta T cell (CL:0000624). T cells bearing the alpha-beta T cell receptor are the most common in the body, and are the most commonly studied, so much so, that in many published papers, the authors do not even bother to specify (or assume) they are studying alpha-beta T cells and thus omit saying so. abnormal single positive T cell morphology any structural anomaly of the regulatory subset of T lymphocytes that are involved in MHC class I restricted interactions MPheno.ontology CD8+ T-cell abnormalities abnormal CD8-positive T cell morphology MP:0005010 abnormal CD8+ T cell morphology CD8+ T cell abnormalities abnormal alpha-beta T cell morphology