## **Core Concept**
Gamma globulins, also known as immunoglobulins, are a class of globulins that play a crucial role in the immune system by acting as antibodies. They are produced in response to antigens and help in neutralizing pathogens. The synthesis of gamma globulins is primarily associated with B lymphocytes (B cells).

## **Why the Correct Answer is Right**
The correct answer, **C. B cells**, is right because B lymphocytes, upon activation by antigens, differentiate into plasma cells. Plasma cells are the primary sites of immunoglobulin (gamma globulin) synthesis and secretion. These antibodies are crucial for humoral immunity, helping to protect against infections by binding to specific pathogens, marking them for destruction, or directly neutralizing them.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because, although T cells are vital for cell-mediated immunity and can help activate B cells, they do not synthesize gamma globulins.
- **Option B:** This option is incorrect as it is not specified; however, if it referred to another cell type like macrophages or neutrophils, these cells are not primarily responsible for gamma globulin synthesis.
- **Option D:** This option is incorrect because, while the liver synthesizes many proteins, including some globulins like alpha and beta globulins, it is not the primary site for gamma globulin (immunoglobulin) synthesis.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that patients with conditions affecting B cell function or development, such as certain types of immunodeficiency diseases, may have reduced levels of gamma globulins, making them more susceptible to infections.

## **Correct Answer:** C. B cells