Madison and Bella are out together eating lunch at their favorite spot, when all of a sudden Madison (the one on the(right) sneezes without covering her mouth. She currently had a cold to. At the Same time Bella (one one the left)inhales all of that bad bacteria.
Inhales
ACHHOOO!
Unfortunately for Bella the virus has entered her body and. gotten into her blood stream and is on a hunt to find a host
Antigen
Pathogen
Antigens are a type of special protein that are produced from B cells and have a unique marker on a pathogen to identify it
Now that the virus has entered her body, her body works to fight off the infection. During this time Bella starts to become sick.
The B cell attaches to a pathogen then multiplies to create antibodies to actack against the pathogens
Now that the infection is now over, there’s are leftover B cells, and antibodies.
These left over B cells help build up her immune system by making a memory of the pathogen
Now after the infection was beat Bella is feeling much bette. She also has the antibodies to fight the infection if she were to get it again.
Unfortunately for Bella the virus has entered her body through her blood stream looking for a host so it can multiply.