Exam 15: The Immune System

The process in which lymphocytes that recognize self-antigens are prevented from being activated is

Complement fragments stimulate all of the following EXCEPT

What system helps to integrate innate and adaptive immune responses?

New drugs are under development to treat AIDS that act to

Since cancer cells dedifferentiate,embryonic or fetal proteins can be used for diagnosis.

The first successful vaccination with an attenuated virus was conducted by

Which of the following does NOT act to produce fever?

Immunological memory is responsible for the rapid secondary response to an antigen.

Colostrum is high in

What chemical acts as a chemokine to draw more neutrophils to the site of an infection?

Interferons stimulate macrophage replication.

Some tumor cells may produce a surface molecule,which may defend them from T cell attack.These surface molecules are called

What are the areas of antigens that stimulate production of various antibodies called?

A mutation in the gene encoding for interleuken-3 would result in

Fevers increase neutrophil activity and interferon production.

Antigen-presenting cells are necessary for ____ response to a foreign antigen.

B lymphocytes are responsible for cell-mediated immunity.

__________ is a technique for artificially gaining active immunity through exposure to non-virulent pathogens or nonpathogenic antigens.

Neutrophils and monocytes are able to leave the blood and enter tissues via diapedesis.

Individuals suffering from acquired immune deficiency syndrome have decreased numbers of circulating