Immune system can be spilt into cellular and humoral.
- Cellular: the Tcells and other immune system cells that they interact with ( phagocytes form the cellular response.
- Humoral: Bcells and the production of antibodies form the humoral response.
- When an antigen enters the body for the first time, it activates the immune system. This is called the primary response
- Its slow as there arent many bcells that make the antibody needed to bind to it
- Eventually, the body will produce enough of the right antibody to overcome the infection.
- BUT in the mean time you will experience the symptoms of the disease
- After being exposed to the antigen, Tcells and Bcells produce memory cells.
- Memory cells will stay in the body for a long time.
- Memory Cells will recognise the specifigic antigen on the second time around.
- They record the specific antibodies needed to bind to antigen.
- Now the person is immune. - body can respond more quickly to a 2nd infection.
1 of 2
- If the same pathogen enters the body again, the immune system will produce a quicker andstronger immune response.
- Memory Bcells divide in to plasma cells to produce the right antibody to the antigen
- Memory Cells divide in to the correct type of Tcell to kill the cell that carries the antigen.
- Secondary response gets rid of the pathogen before you being to show any symptoms
2 of 2
Similar Biology resources: