|
The actions of the cells of the 2nd line of defence involved relevant to the pathogen is, the macrophage engulfs the pathogen (virus) and its antigens are presented which then activate the T & B cells
|
|
|
|
 |
|
|
|
The actions of the cells and chemicals of the 3rd line of defence involved relevant to the pathogen are the T-helper cells activate the B-cells, then the B-Cells Multiply and then change shape...
|
|
|
|
|
|
|
|
|
...Into memory cells and plasma cells which make antibodies. The T-helper cells then releases perforin against the infected cell which is then lysed.
|
|
|
|
|
|
|
|
