There are two different responses produced by the immune response in mammals. There is the "Cell mediated" response, and there is the "antibody response". First we shall deal with the Cell mediated response. This response is based upon the help of T-Cells. There are various types of T-cells which all have different jobs in the system. The cell mediated response is mainly utilised in defence against intracellular pathogens, such as viri and funghi(and some …showed first 75 words of 637 total…

…showed last 75 words of 637 total…had organ transplants are treated with high doses of steroids, such as cyclo sporin. They use these drugs to weaken the immune system so that the organ that has been transplanted is less likely to be rejected by the body of the recipent. One can also gamma eradiate tissue so that the antigen on tissue is destroyed before utilising it, but this can not be done with organs seing as they need to be "live".