Studies Have Shown That Secondary Lymphoid Tissues Are a Major

question 18

Multiple Choice

Studies have shown that secondary lymphoid tissues are a major reservoir of HIV in infected individuals. In part, this is due to the high numbers of viral target cells expressing CD4, such as T cells, macrophages, and dendritic cells. Surprisingly, secondary lymphoid tissues were also found to contain large numbers of infectious virus particles in the form of immune complexes. A comparison of the viral species found in these immune complexes indicates that they include virus particles that have been retained for over a year. The cells responsible for this reservoir of infectious HIV are:

• A) HIV-specific B cells
• B) Follicular dendritic cells
• C) CD4 T cells
• D) Subcapsular sinus macrophages
• E) CD4⁺ dendritic cells

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Definitions:

Lawrence Kohlberg

An American psychologist best known for his theory of stages of moral development.

Cognitive Structures

Mental frameworks that individuals use to organize and interpret information, guiding how they perceive the world.

Assimilation

In psychology, a cognitive process where individuals integrate new information into existing frameworks or schemas.

Piaget's Theory

A theory of cognitive development that describes how children's thinking evolves in stages as they interact with their environment.