In a Complement-Dependent Cytotoxicity Assay, Lymphocytes Were Incubated in the Presence

question 13

Multiple Choice

In a complement-dependent cytotoxicity assay, lymphocytes were incubated in the presence of antibody of known HLA specificity. Complement was added, and the cells absorbed trypan blue. What is the interpretation of this assay?

• A) The lymphocytes express antigens specific for the antibodies in the assay.
• B) The lymphocytes do not have antigens specific for the antibodies in the assay.
• C) This is not a valid method for identifying HLA antigens.
• D) The cells are resistant to complement lysis.

---

Definitions:

Potential Trends

Emerging patterns or changes in industries, technology, consumer behavior, or the global economy that could influence future developments.

Regulatory Force

External forces, often in the form of government laws, regulations, and policies, that can impact a business’s operations and its approach to the market.

Environmental Scanning

The process by which businesses monitor and analyze their external environment to identify opportunities and threats.

Technological Environmental Force

Influences in the business environment resulting from changes in technology, impacting how products are produced, marketed, and distributed.