Clonal Selection (School Revision) Immunology

Clonal Selection is the process of forming new antibodies. When there is a new antigen(foreign infectious particles) invading our body, it will trigger the immune system. The T-cell will then activate the B-cell. After the B-cells are being activated, it will start to undergo a few cell divisions. After going through many cell divisions, it will form many memory cells and plasma cells.

The functions of the memory cell is to store the information of the specific antibody that has the immunity against the new antigens. If there are memory cells, the immune system will then be able to produce the specific antibody that has immunity to the new antigens.

The functions of the plasma cells is to produce antibodies to fight against the new foreign antigens.

After we recovered from the disease, the memory cell still remains in our body. Therefore if we infected the same disease again, we still have the memory cell which are present in our body, therefore, the plasma cell will produce the same antibody to fight against the disease. Therefore we can have immunity on the second time we infected the same disease.