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.
Top, suppressor T cells (T suppressor) and effector T cells (T effector) could meet at an APC, facilitating the binding of CTLA-4 on suppressors to CD80 and/or CD86 (CD80/86) on activated effectors. 'Outside-in' signaling by CD80 and/or CD86 would then prevent further activation of the effectors.