Positive selection of lymphocytes refers to the

A. processing of an antigen by a macrophage.
B. proliferation of natural killer cells.
C. production of antigen-specific antibodies.
D. survival of pre-B and pre-T cells that are capable of an immune response.
E. replication of memory cells.


D

Anatomy & Physiology

You might also like to view...

The average score of a cow's body on a body condition scoring chart is _________

Fill in the blank(s) with correct word

Anatomy & Physiology

The walls of the alveoli are composed of

A. areolar connective tissue. B. simple squamous epithelium. C. ciliated columnar epithelium. D. stratified squamous epithelium.

Anatomy & Physiology

Which figure exhibits concentric contraction of the biceps brachii muscle?

a) A b) B c) C d) none of these choices

Anatomy & Physiology

Which of the following is not a mechanism for the development of autoimmune disorders?

A) exposure of previously "hidden" self-antigens to the adaptive immune system B) a second exposure to an allergen C) mutation followed by the appearance of membrane proteins not previously present D) cross-reaction of antibodies formed against foreign antigens with self-antigens

Anatomy & Physiology