Semen by definition is the fluid ejaculated from a male, which includes the sperm cells as well as a number of other components. The Elements (ingredients) Of Semen. Very simply put, seminal fluid is a thick white secretion rich in sugars, mostly fructose to fuel the sperm cells on their journey to the egg. This secretion is what composes the bulk of semen by volume (50-80%). Although mostly comprised of water, proteins, and sugars.
The T-cell receptor, or TCR, is a molecule found on the surface of T cells, or T lymphocytes, that is responsible for recognizing fragments of antigen as peptides bound to major histocompatibility complex (MHC) molecules.
Following T cell development, matured, naive NaÃ¯ve t cells leave the thymus and begin to spread throughout the, body including the lymph. (Nodes Naive naÃ¯ve t cells Are those t cells that have never been exposed to the antigen that they are programmed to). Respond to Like all, t cells they Express the t-CELL receptor. cd3 complex