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Respiration, Immune System, Blood Cells › View

The immune system fights diseases. The circulatory system pairs with the immune system because ___.

A. blood is made in the bones.

B. plasma carries nutrients.

C. red blood cells carry oxygen.

D. white blood cells fight infection.

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Vaccines Biotherapeutics & Cellular Meat › View

What is the primary function of traditional vaccines?

A. To use large doses of disease-causing pathogens

B. To use very small or inactivated doses of disease-causing pathogens

C. To use genetic material from the disease-causing pathogen

D. To use lipid nanoparticles

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