You Have Used Fluorescence-Activated Cell Sorting to Separate Blood T

question 47

Short Answer

You have used fluorescence-activated cell sorting to separate blood T lymphocytes from a healthy person and a patient infected with a virus. To sort the cells, you used antibodies against two cell-surface receptors, CD4 and CD8, each conjugated to a different fluorescent dye. Based on the results below, which cell type do you think is depleted by the viral infection: CD4+ helper T cells (H) or CD8+ cytotoxic T cells (C)? In these dot plots, each cell is represented by a dot whose coordinates are the intensities of CD4 and CD8 signals. Write down H or C as your answer.

---

Definitions:

Expensive Resources

Resources that have a high cost associated with them, either due to their scarcity, quality, or the demand for them.

Automobile Manufacturer

A company that produces and sells cars, trucks, and other vehicles to consumers worldwide.

Mass Market

A large segment of consumers with a wide range of needs and preferences, targeted by companies producing goods and services at scale for broad consumption.

All Ages

A term indicating that something is appropriate, accessible, or available to individuals of any age group.