There are four types of T cells, each with a special purpose. Helper T cells detect infection and get the other cells of the immune system ready for battle. Helper T cells also tell B cells to produce antibodies, highly specialized proteins that help defend the body against infection. Cytotoxic, or killer, T cells destroy infected cells. Regulatory T cells tell the immune system when the battle with the pathogens is over and to stop fighting. Memory T cells remember how to defeat an infection and can respond rapidly if the same infection reoccurs.
Below is a list of average costs for transplants and first-year expenses. The actual costs may be higher or lower than the figures listed here: 1  Bone Marrow (autologous): $360,000. 2  Bone Marrow (allogeneic): $800,000.3  Cornea: $25,000. 4  Heart: $1 million. 5  Intestine: $1.2 million. 6  Kidney: $260,000.elow is a list of average costs for transplants and first-year expenses. The actual costs may be higher or lower than the figures listed here: 1  Bone Marrow (autologous): $360,000. 2  Bone Marrow (allogeneic): $800,000.
Quick Facts. 1  The kidney is the most commonly transplanted organ. 2  For the first time, the number of patients currently awaiting kidney transplants in the U.S. exceeds 100,000. 3  Of those on the waiting list, more than one-third will wait three or more years for a transplant.