The Cells of Adaptive Immunity That Are Involved in the Recognition

question 204

Multiple Choice

The cells of adaptive immunity that are involved in the recognition of foreign antigens are:

• A)helper T cells and helper B cells
• B)macrophages and helper B cells
• C)macrophages and helper T cells
• D)plasma cells and macrophages

---

Definitions:

Unconditioned Stimulus

A stimulus that naturally and automatically triggers a response without any prior learning.

Conditioned Stimulus

A previously neutral stimulus that, after being associated with an unconditioned stimulus, elicits a conditioned response.

Classical Conditioning

A teaching method involving the repeated association of two stimuli; a reaction originally produced by the second stimulus eventually becomes produced by just the first stimulus.

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a reflexive response without prior conditioning.