What Is the Main Purpose of Crossmatching Before Transplantation

question 42

Multiple Choice

What is the main purpose of crossmatching before transplantation?

• A) To identify antibody in the potential donor to antigen present on recipient cells
• B) To identify antibody in the serum of the potential recipient to antigens present on donor tissues
• C) To identify antigen in the recipient cells to antibody present in donor serum
• D) To identify antigen present on donor tissues to antibody present in recipient serum

---

Definitions:

Profit-Maximizing Quantities

The level of output at which a firm maximizes its profit, determined by the point where marginal cost equals marginal revenue.

Occupational Licensing

The laws of state or local governments that require that a worker satisfy certain specified requirements and obtain a license from a licensing board before engaging in a particular occupation.

Exclusive Unionism

The policy, pursued by many craft unions, in which a union first gets employers to agree to hire only union workers and then excludes many workers from joining the union so as to restrict the supply of labor and drive up wages. Compare with inclusive unionism. The policies typically employed by a craft union.

Imperfectly Competitive Input Markets

Markets where the factors of production (inputs) are bought and sold, and where no single buyer or seller can influence prices significantly due to the presence of many competitors, but not enough for perfect competition.