An Antibody Identified in the Transfusion Service Appeared to Be

question 26

Multiple Choice

An antibody identified in the transfusion service appeared to be reacting stronger following the second exposure to an antigen from a transfusion.The most likely explanation of this observation is:

• A) affinity maturation of the immunoglobulin molecule.
• B) anamnestic response.
• C) isotype switching.
• D) All of the above

---

Definitions:

Conditioned Emotional Response

An emotional reaction acquired through classical conditioning, where a previously neutral stimulus is paired with an emotionally charged stimulus.

Conditioned Stimulus

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

Little Albert

An early 20th-century experiment by John B. Watson and Rosalie Rayner, demonstrating classical conditioning in a young child.

White Rat

Commonly used in psychological experiments, particularly in the study of behavior, learning, and conditioning; often associated with B.F. Skinner's work.