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Microbiology › View

Which of the following statements does not represent the role of a cell marker in the third line of defense?

A. They are attachment sites for foreign molecules.

B. They serve as recognition factors for self and nonself molecules.

C. They receive and transmit signals to coordinate the immune response.

D. They serve as transcription factors to initiate antibody production.

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Human Body and Pathogens › View

What reasoning explains why muscle action in the small intestines and other organs is known as involuntary muscle action?

A. The muscles of the small intestine and other organ muscles cannot be consciously controlled

B. The muscles of the small intestine and other organ muscles can be consciously controlled

C. Ligaments control the actions of the small intestine and other muscles

D. The muscle movement is controlled by moving skeletal muscles

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