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Almost every cell of the 30 trillion that comprise the human body has the capacity to recognize when they are infected with a virus.
Once aware of this threat, the infected cell has two main responsibilities. First, the cell must launch a call to arms.
This task requires the secretion of a signal (interferon) that informs the surrounding cells of the imminent threat and instructing them to fortify their defences.
The second responsibility is to launch a call for reinforcements. This task also requires a secreted signal (chemokines) that recruits more sophisticated immune cells to the site of infection.
Attendees will learn how