Mod 28 Anatomy Ch. 22

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Immunoglobulins that are most abundant and are responsible for resistance against many viruses, bacteria, and bacterial toxins are

IgE

Defense of the body against a particular pathogen is provided by

adaptive immunity.

Which of the following statements about MHC proteins is not true?

bind complement

When an antigen is bound to a Class I MHC molecule, it can stimulate a ________ cell.

cytotoxic T

Cells that help regulate the immune response are ________ cells.

helper T

When an antigen is bound to a Class II MHC protein, it can activate a ________ cell.

helper T

Suppressor T cells act to

inhibit T and B cell activities.

T cells and B cells can be activated only by

exposure to a specific antigen at a specific site in a plasma membrane

Helper T cells do all of the following, except

provide a rapid response to a future exposure to the antigen.

Cytotoxic T cells can attack target cells with which of these chemical weapons?

secrete a cytokine that triggers apoptosis


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