Exam 25: Immune Mechanisms

Substances that induce an immune response are known as

Tolerance is the acquired ability to make an adaptive immune response directed to self-antigens.

In class switching in the secondary antibody response,the most common antibody switch is from

Oxygen compounds toxic to pathogens include

Which of the following is a function of dendritic cells?

T cells recognize antigens with their

Another name for programmed cell death is

Dead phagocytes make up much of the material of pus.

Intrinsic properties of immunogens include

The part of the antigen recognized by the antibody or TCR is called the

Natural killer cells like Tc cells use ________ and granzymes to kill their targets without prior exposure or contact with the foreign cells.

TC cells express a(n)________ protein co-receptor.

A cross-reaction is an interaction between an antibody or TCR and

Monocytes are circulating precursors of macrophages and dendritic cells.

When is a bacterial cell more likely to be phagocytized?

Staphylococcus aureus produces carotenoids that neutralize singlet oxygen and prevent killing.

TCRs recognize epitopes only after the immunogens have been partially degraded.

T cell receptors on a particular T cell can recognize more than two antigens.

Streptococcus pyogenes produces proteins called ________,which alter(s)the surface of the pathogen and inhibits phagocytosis.

A serum containing antigen-specific antibodies is called an