T-helper cells

T-help·er cells (Th),

a subset of lymphocytes that secrete various cytokines that regulate the immune response: subset 1, which synthesize gamma-interferon and TNF-β and are involved in cell-mediated immunity; subset 2, which synthesize IL-4, IL-5, and IL-9 and are involved in immunoglobulin synthesis.
Synonym(s): helper cells

T-help·er cells

(Th) (hel'pĕr selz)
A subset of lymphocytes that secrete various cytokines that regulate the immune response.
Synonym(s): helper cells.

T-helper cells

A cellular component of the immune system that plays a major role in ridding the body of bacteria and viruses, characterized by the presence of the CD4 protein on its surface; the type of cell that divides uncontrollable with CTCL.
References in periodicals archive ?
T-helper cells recognize only those antigens which are presented on the surface of APCs in association with MHC-II antigens and undergo the process of blast formation, proliferation and differentiation into effector and memory T-helper cells.
According to the company, PolyStart is a unique vaccine platform antigen expression system that 'elevates' the expression and consequently the processing and presentation of the desired antigenic peptide for the stimulation of T-killer and/or T-helper cells to recognize and kill cancer cells.
T-helper cells identify and tag invaders for elimination by the immune system.
HIV is a retrovirus and the infection leads to a progressive reduction in the number of CD4+ T-helper cells (so called because CD4 glycoprotein is found on their surface) which are an essential part of the human immune system.
Antigen Express scientists, and others, have shown clearly that suppression of expression of the Ii protein in cancer cells allows for potent stimulation of T-helper cells and prevents the further growth of cancer cells.
Development of type 2 T-helper cells in allergy//Curr.
This immunological response of type 1 T-helper cells is a result of deposition of antigenic material in the affected tissues, which is presented to T-lymphocytes by the macrophages or dendritic cells.
Results: Cell numbers, percentage of CD25 expressing T-helper cells and levels of IL-6 and TNF-[alpha], but not of IL-10 were significantly elevated after combined treatment of PBMC with PHA and VALE or OA, respectively.
cells or T-helper cells and consequent impairment of immune response.