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.
Tumor suppressor genes are genes normally present in our cells. When working properly, they control the processes of cell growth and cell death (called apoptosis). Through these processes, they can also suppress tumor development. When a tumor suppressor gene is mutated, this can lead to tumor formation or growth. Properties of tumor suppressor genes include the following: Both copies of a specific tumor suppressor need to be mutated (both members of the gene pair) in order to cause a change in cell growth and tumor formation to occur.