pavone View Biontech Covid Vaccine Mechanism Pictures knows. This invasion, called an infection, is what causes illness. Different types of white blood cells fight infection in different ways:
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Blood contains red cells, which carry oxygen to tissues and organs, and white or immune cells, which fight infection. See full list on cdc.gov See full list on cdc.gov Macrophagesare white blood cells that swallow up and digest germs and dead or dying cells.
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