Cells that are identified by the presence of immunoglobulins on the surface include?
**Core Concept**
Cells that display immunoglobulins on their surface play a crucial role in the adaptive immune response. These cells are responsible for recognizing and binding to specific antigens, marking them for destruction or activation of an immune response. Immunoglobulins, also known as antibodies, are glycoproteins produced by B cells.
**Why the Correct Answer is Right**
The correct answer is a type of B cell that has undergone activation and class switching, resulting in the expression of immunoglobulins on its surface. This process is mediated by the activation of B cell receptors (BCRs), which are composed of immunoglobulin molecules that recognize and bind to specific antigens. Upon activation, B cells undergo clonal expansion and differentiation into plasma cells, which produce large amounts of immunoglobulins. Some B cells, called memory B cells, retain the ability to recognize and respond to specific antigens, providing long-term immune memory.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify a type of cell that displays immunoglobulins on its surface.
**Option B:** This option is incorrect because it refers to a type of white blood cell that is involved in the innate immune response, not the adaptive immune response.
**Option C:** This option is incorrect because it does not specifically refer to a type of cell that displays immunoglobulins on its surface.
**Clinical Pearl / High-Yield Fact**
B cells that display immunoglobulins on their surface are essential for the development of humoral immunity, which provides long-term protection against infections. Understanding the role of B cells in the adaptive immune response is crucial for the diagnosis and treatment of immunodeficiency disorders and autoimmune diseases.
**Correct Answer: C. Plasma cells. Plasma cells are the mature, antibody-secreting form of B cells that display immunoglobulins on their surface.