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.
1 Over 3,000 new patients are added to the kidney waiting list each month. 2  1. 3  12 people die each day while waiting for a life-saving kidney transplant. 1. 4  Every 14 minutes someone is added to the kidney transplant list. The median wait time for an individualâs first kidney transplant is 3.6 years and can vary depending on health, compatibility and availability of organs. 2. 2  In 2014, 17,105 kidney transplants took place in the US.