The body's continuing immune response and defense against pathogens it has seen before is known as:

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Active immunity refers to the body's ability to produce its own immune response and defense against pathogens it has seen before, such as after being vaccinated or recovering from an infection. This is in contrast to passive immunity, which involves receiving ready-made antibodies from another source, and graft-versus-host, which is a complication that can occur after a transplant when the transplanted cells attack the recipient's body. Immunoglobins are a type of protein produced by the immune system that bind to and neutralize pathogens.

The Body's Continuing Immune Response and Defense Against Pathogens It