T-lymphocyte


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T-lymphocyte

n
(Biochemistry) a type of lymphocyte that matures in the thymus gland and has an important role in the immune response. There are several subclasses: killer T-cells are responsible for killing cells that are infected by a virus; helper T-cells induce other cells (B-lymphocytes) to produce antibodies. Also called: T-cell
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References in periodicals archive ?
The Phase 1 study is a dose finding study of BI 765063, a myeloid checkpoint inhibitor, administered as a single agent and in combination with Boehringer Ingelheim's monoclonal antibody PD-1 antagonist BI 754091, a T-lymphocyte checkpoint inhibitor.
Adenosine deaminase levels (ADA) are used as marker of cell mediated immunity, especially the ADA levels are markers of T-lymphocyte activation.
In particular, the tumor-infiltrating T-lymphocyte sub-types have a key role in cellular proliferation and metastases, in particular, in the tissue undergoing malignant transformation by playing a role in cellular viability and cytokine production (21).
To the Editor: Regulatory T-cells (Tregs), a subset of CD4+ T-cells, have the capacity to actively suppress immune responses and play a pivotal role in sepsis-induced immunosuppression.[1] B- and T-lymphocyte attenuator (BTLA) is a co-inhibitory receptor that is known to potently inhibit CD4+ T-cell function and to block prosurvival signaling in CD4+ T-cells.[2] Tregs constitutively express BTLA.
Analyses of breeds and litter effect on routine blood traits and T-lymphocyte subpopulation traits in piglets.
Specifically, rheumatic and musculoskeletal adverse events were far less common with the cytotoxic T-lymphocyte antigen 4 checkpoint inhibitor ipilimumab (Yervoy) relative to programmed cell death protein 1 inhibitors, particularly nivolumab (Opdivo).
Serum sCTLA-4 levels in patients with AS and RA and in the control group Ankylosing spondylitis Rheumatoid arthritis sCTLA-4 Median 0.22 0.04 IQR (*) 0.09 0.01 p(AS-RA)<0.001; p(AS-Control)<0.001; p (RA-Control)>0.05 Control group p sCTLA-4 0.04 <0.001 0.03 p(AS-RA)<0.001; p(AS-Control)<0.001; p (RA-Control)>0.05 Kruskal-Wallis test (post-hoc test: Bonferonni-corrected Mann-Whitney U Test, [alpha] = 0.017) sCTLA-4: soluble Cytotoxic T-Lymphocyte Associated Antigen-4; AS: ankylosing spondylitis; RA: rheumatoid arthritis; IQR: interquartile rang Table 3.
Immunohistochemical stain for CD3, a T-lymphocyte marker, was performed on sections of the cervical mass, proventricular serosal masses, and spleen.
(22-24) Although a minimum dose of 15 Gy causes DNA breakage and prevents T-lymphocyte proliferation, in the United States the recommendation for transfusion practice is that the center of a component bag should receive 25 Gy (versus 50 Gy in some countries), and any other area outside the bag center should receive a minimum of 15 Gy (versus 25 Gy in some countries).
A fibrobronchoscopy was also performed revealing small and round leveduriform structures with morphological characteristics consistent with Histoplasma in a patient with CD4 T-lymphocyte count of 77/m[m.sup.3].
Monoclonal antibodies targeting the cytotoxic T-lymphocyte antigen 4 (CTLA4) and programmed death-1 (PD-1) pathways inhibit downregulation of the immune system, thereby allowing an enhanced T-cell immune response.