Macrophage encounters, eats a pathogen floating in the blood.
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I am a helper T cell. I interact with the antigen and activate memory T and killer T cells specific to this pathogen.
I will display the pathogen's antigens to helper T cells, who will activate other types of white blood cells.
I am an antigen.
The macrophage displays an antigen (a molecule on the outside of pathogens that signals the body to generate immune response) specific to the pathogen it ate to helper T cells. The helper T cell activates the other parts of the acquired immune system.
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I am a T cell. I interact with the helper T cell to be activated and differentiated into two types of cells.
I connect with T cells, activating and differentiating them into Killer T cells and Memory T cells.
I am a killer T cell. I attack and destroy cells infected with a specific pathogen.
I am a memory T cell I remember a specific pathogen.
T cells interact with Helper T cells, which activates and differentiates the T cells into Killer T cells and Memory T cells.
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I watch this happening from the side.
I am shooting perforin at the infected cell.
Killer T cells attack infected cells with perforin, a protein that binds to their cell membranes.
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I watch this happening from the side.
I made the infected cell burst, which destroyed it.
This causes the cell membrane to burst, and destroys the infected cell before it has a chance to help the pathogen reproduce.
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We saw the Killer T cells destroy the infected cells, which stopped the pathogen from further reproducing.
We will make sure our body remembers these pathogens. If they come back, we will be prepared and they will be destroyed even faster.
Memory T cells remember the pathogen, which results in a faster Killer T cell response in future infections, which would result in infected cells being more quickly destroyed, leading to less chances for the pathogen to reproduce.