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The NOD and NOD-like receptor proteins are expressed on the surface of intestinal epithelial cells where they bind to extracellular bacteria and induce cytokine production.

The HIV lymphocyte-tropic stain bind to ______ co-receptor on CD4 T cells:

An antigenic drift occurs every 10 -50 years

Which of the following is an incorrect statement

Bone marrow transplantation:

Antigenic shift in influenza is a result of which of the following processes?

MALT contains large numbers of effector cells, even in the absence of pathogen  

Mice lacking the poly Ig receptor  have an immunodeficiency disease characterized by increased susceptibility to mucosal infections. Yet, a genetic deficiency in the production of IgA antibodies is the most common form of human immunodeficiency, and is generally a mild disease and often even asymptomatic. This dichotomy can be explained by:

Individuals resistant to HIV have which of the following mutated receptors?

What subject does the narrator teach?