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This is the doctrine which holds the soul is the vital principle.

This era saw the development of a standard of living.

Substances that are recognized as foreign by the immune system and provoke an immune response are called:

Which of the following is NOT considered as “MALT” (mucosa-associated lymphoid tissue)?

Certain antibodies bind to the surface of a virus molecule.  This action prevents the virus from entering one of our own cells.  Which antibody function is being described in this example?  

Which of the following is associated with Leukemia?

Which of the following correctly describe(s) the spleen?

What will stimulate a hemopoietic stem cell to become a white blood cell?  Choose two correct answers.

Which of the following is NOT a lymph organ?

You had a case of chicken pox when you were six years old.  When you were ten, your friend developed chickenpox.  But after spending time with your friend, you did not develop it again.  This was mostly likely due to: