How your body reacts to and destroys pathogens.
A pathogen is a bacteria, virus or microorganism that can cause disease.
Antigens are the protein markers on cells
Antibodies are proteins made in response to antigens.
An immune response is the immune system's reaction to the specific defenses and recognizing to destroy pathogens.
A phagocyte is a type of cell in the body capable of engulfing and absorbing bacteria and other small cells and particles.
How My Immune System Responded to a Cold Virus
I cought the virus by drinking something someone else who was already sick drank, which was filled with the virus. My body's first line of defense is skin, mucous, tears, saliva, sweat and acidic oils which are barriers to foreign substances. My mouth contains saliva which breaks pathogens down. My body attempts to kill the virus by having phagocytes engulf the infected cells. My immune system recognizes the virus by the antigens that don't exactly match the antibodies. This prevents the virus from entering back into my body because the antibodies will recognize it's foreign and attack it. Memory T-cells remember this and antibodies against it are produced.