Passport delays: applicants' long and frustrating wait. 1  Backlog caused by spike in applications has thrown many people's plans into chaos with some having to resort to desperate measures. 2  Backlog caused by spike in applications has thrown many people's plans into chaos with some having to resort to desperate measures.
Suppressor T cell. Definition. noun. A type of T cell that expresses CD8 transmembrane glycoprotein, and functions by inhibiting, suppressing, or helping to stop an immune response by releasing signals to other immune cells. Supplement. Examples of suppressor T cells are suppressor macrophages.
The antigen-specific cells contribute to the cell-mediated immunity include CD8+ cytotoxic T lymphocytes (CTLs), and cytokine secreting CD4+ TH (T helper cells)cells that mediate delayed type hypersensitivity. Effector T cells generated in response to antigen are responsible for cell-mediated immunity.