Recipient Serum That Reacted with One Out of Five Donor

question 15

Multiple Choice

Recipient serum that reacted with one out of five donor units in the AHG phase and where the antibody screen was negative is probably due to:

• A) an alloantibody directed against a high-frequency antigen.
• B) an alloantibody directed against a low-frequency antigen.
• C) an alloantibody coating the recipient cells.
• D) an ABO mismatch.

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Definitions:

Absolute Advantage

The ability of an individual, company, or country to produce a good or service more efficiently than competitors, using fewer resources.

Lumber

Lumber that has been manufactured into planks and beams, marking a step in the journey of producing wood products.

Comparative Advantage

The ability of an individual, company, or country to produce a particular good or service at a lower opportunity cost than others.

Copper Ore

A natural mineral formation containing copper in sufficient concentration to make its economic extraction feasible.