Answer:
1) cortical epithelial cells; (2) macrophages and dendritic cells
Explanation:
T cells, also known as T lymphocytes, are a fundamental type of cell of the immune system that determines the specificity of the immune response to specific foreign particles (antigens). T cells are produced in the Thymus (it is for that reason that they are called T cells) and then circulate throughout the bloodstream in order to recognize specific antigens in association with major histocompatibility complex (MHC) molecules on the surface of antigen-presenting cells (APC), such as macrophages and dendritic cells. T cells undergo positive and negative selection: 1- positive T-cell selection refers to the process by which T cells bind cortical epithelial cells that express Class I or Class II MHC molecules with enough affinity to get a survival signal; whereas negative selection occurs when T cells bind to macrophages and dendritic cells that express MHC specific receptors with a strong enough affinity to get an apoptosis (programmed cell death) signal.
"Mitosis is a division in which the daughter cells formed are same as their parent cells.In humans all sorts of cells undergo this type of division Except cells of gametes(reproductive system).For example,mitosis for growth of body,for hair growth,tissue cells when repairing is required etc."
I hope all is well, and you end up passing!
Answer:
True
Explanation:
They are a part of the musculoskeletal system which helps provide form, stability, support, and movement.
