White blood cells fight diseases

Diseases are caused by

The _______ system works to attack pathogens that have entered the body.

The immune system produces ________ to attack foreign antigents that it recognizes on the cell surface of the pathogen.

A vaccine contains a

Which is NOT a pathogen

A _________________ is part of the pathogen.

The body likes the constant state of being balanced which is called

Antibodies are specific and can only attack one kind of antigen based on its ______

Keeping the body healthy is the primary job of what system?

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