Adjuvant given along with antigens are going to
**Core Concept**
Adjuvants are substances used in vaccines to enhance the immune response to antigens. They stimulate the innate immune system, which then amplifies the specific immune response to the antigen.
**Why the Correct Answer is Right**
Adjuvants work by activating immune cells such as dendritic cells and macrophages, which engulf the antigen and present it to T-cells. This leads to a stronger activation of T-cells and an increased production of antibodies. Adjuvants can also increase the expression of costimulatory molecules on antigen-presenting cells, which is essential for T-cell activation. Examples of adjuvants include alum, complete Freund's adjuvant, and QS-21.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not applicable as adjuvants are not typically used to inhibit immune responses.
* **Option B:** This option is incorrect as adjuvants are not primarily used to treat infections.
* **Option C:** This option is not the primary function of adjuvants, although they may have some effects on the immune system that could be related to tolerance.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that adjuvants can cause local and systemic reactions, such as pain, redness, and inflammation, at the injection site. This is because they stimulate the innate immune system, which can lead to an exaggerated response.
**Correct Answer:** C. stimulate the immune system.