has part has part characteristic of inheres in has modifier lymphocyte apoptotic process Decreased T cell apoptosis Apoptosis, a form of programmed cell death, is an important mechanism that prevents uncontrolled proliferation of activated lymphocytes and regulates lymphocyte homeostasis. Defective lymphocyte apoptosis UMLS:C1858969 Abnormal decrease of apoptosis by peripheral blood T cells in an in vitro culture, compared to a healthy control sample. May be either spontaneous, induced by UV, X-ray, FasL or other agens. Commonly measured by surface expression of phosphatidyl serine labelled by Annexin V, but other methods such as staning of cleaved Caspases may be used by different laboratories. HP:0002731 Abnormal T cell apoptosis abnormal decreased rate