Active immunity is when an immune response occurs after a germ produces what?
harmful substances bioaerosols rapid expansion Allergies anemia it needs them Chemical energy memory cells
A B C D E F G H
Pathogens are germs that cause disease.
Active immunity results when an immune response to a germ produces memory cells.
Active immunity is when an immune response occurs after a germ produces what? (A) harmful substances (B) bioaerosols (C) rapid expansion (D) Allergies (E) anemia (F) it needs them (G) Chemical energy (H) memory cells