Shane Crotty, professor at the La Jolla Institute for Immunology, studies how the immune system remembers infections and vaccines.
She explained: “Your immunes system is complicated, and doesn’t just have one weapon.
“You’ve got neutralising antibodies, other kinds of antibodies and you’ve got memory B and T cells.”
B and T cells are special white blood cells that work together to hunt down infections and remember how to fight them off, for the future.
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