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Which of the following statements is correct about a smallpox epidemic in Boston in 1721? Mark all that apply.  

Which of the following statements is correct about the polio and the polio vaccine? Mark all that apply.

Which takes longer to make enough antibodies to fight off an infection?

What kind of antibodies cause donor blood to clot during a transfusion reaction?  

Antivenom (antivenin) contains _________ that can bind to the venom and prevent it from binding to host cells.

What disease caused the scars in the photo below?

Which of the following statements is correct about Edward Jenner’s vaccination experiment? Mark all that apply.

The discoverer of the pathogenic bacterium Hemophilus influenzae wrongly assumed that the microbe was the cause of the flu. 

In a typical Y-shaped antibody, how many antigens can the antibody bind to?  

Susumu Tonegawa won a Nobel Prize in 1987 for figuring out how B cells: