Group( D )

........Connective tissue (bone, muscle)مهمه

......Epithelial origin (lung, breast, colon)?

......Abnormal mass of tissue due to uncontrolled cell division?

Antibodies also play a significant role in transplant rejection?

.......Activated immune cells release cytokines, exacerbating inflammation and tissue damage. مهمه

.......Antibodies bind to donor antigens, activating the complement system and leading to tissue damage?مهمه

...... T-cells recognize foreign MHC molecules, leading to activation of cytotoxic T-cells and destruction of donor tissue.

Chronic Rejection It is primarily mediated by T-cells that attack the donor tissue?

.....occurs over months to years?

Hyperacute Rejection This leads ....

.... typically develops within days to weeks after the transplant?

.....is caused by pre-existing antibodies in the recipient that recognize and attack the donor antigens?مهمه

.....occurs within minutes to hours after the transplant?

..... For example, pig heart valves can be transplanted into humans?مهمه

........ These transplants require immunosuppressive drugs to prevent rejection?

.....This is a transplant between genetically different individuals of the sam species.مهمه

Most human organ transplants are ........مهمه

Allograft the most immunologically compatible transplants possible?

.......This type of transplant occurs between identical twins?مهمه

.....eliminate the risk of rejection since the tissue is from the patient's own body?