## **Core Concept**
Gamma globulins, also known as immunoglobulins, are a class of globulins that play a crucial role in the immune system. They are proteins produced by B cells (plasma cells) that function as antibodies to neutralize pathogens. The synthesis of gamma globulins is vital for providing immunity against infections.

## **Why the Correct Answer is Right**
The correct answer, **C. Liver and B cells**, highlights the primary sites of gamma globulin synthesis. While B cells (plasma cells) are the direct producers of gamma globulins, the liver also contributes to the production of some gamma globulins, especially those involved in the acute phase response. However, it's essential to note that the majority of gamma globulins are produced by B cells.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not accurately represent the primary site of gamma globulin synthesis.
- **Option B:** This option is incorrect as it inaccurately suggests that only one type of cell or organ is responsible for gamma globulin synthesis, omitting the role of B cells or the liver.

## **Clinical Pearl / High-Yield Fact**
A critical point to remember is that gamma globulins are crucial for humoral immunity. Deficiencies in gamma globulins can lead to increased susceptibility to infections. This is a key concept in understanding immunodeficiency diseases and the role of immunoglobulin replacement therapy.

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