or cellular immunity, occur through the T-cell system. On exposure to an antigen, the lymphoid tissues release large numbers of activated T cells into the lymph system. These T cells pass into the general circulation. There are three main groups of T cells: (a) helper. (b) cytotoxic T cells: which attack and kill microorganisms and sometimes the body's own cells.
Organ Donation Day. About Organ Donation Day. Organ Donation Day in India is celebrated on 13th of August every year by the people, government organizations and other related professions in order to motivate normal human beings to donate the organs as well as to understand the value of organ donation in the life of an individual.
âOur primary goal is to preserve human life and improve the quality of life for those in need of organ, corneal and tissue transplants. As of June 30, 2011, data reported by Donate Life America state teams revealed 42 percent of U.S. adults (age 18 and older) are registered as organ, eye and tissue donors. States with the highest percentage included: Alaska and Montana (78 percent each) and Washington (74 percent).