Describe how and why both types of adaptive immunity can cause problems with organ transplantation

The transfer of cells, tissues or organs is transplantation and transplantation rejection occurs when the immune system of a person detects that antigens on the cells of the organ are vary from each other or mismatched, and when this mismatching occurs it can trigger a blood transfusion reaction. 

There are two types of adaptive immunity are humoral immunity and cell-mediated immunity. These both types of immunity can cause problem in organ transplantation.

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fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

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