label: Abnormal CD25 upregulation upon TCR activation
label_lc: abnormal cd25 upregulation upon tcr activation
description: "Any abnormality in the upregulation of CD25 on T cells after activation via the T cell receptor (TCR). CD25 is the alpha chain of the IL2 receptor. Ligation of the T cell antigen receptor leads to the induction of CD25 expression."