Questions: Question 13 Which cytokine would the nurse teach a client is treatment for multiple sclerosis β-Interferon Interleukin-2 Erythropoietin Colony-stimulating factor

The answer is the first one: $\beta$-Interferon.

Explanation for each option:

1. $\beta$-Interferon: This is the correct answer. $\beta$-Interferon is a type of cytokine that is commonly used in the treatment of multiple sclerosis (MS). It helps to modulate the immune system and reduce inflammation, which can decrease the frequency and severity of MS relapses.

2. Interleukin-2: This cytokine is not typically used for treating multiple sclerosis. It is more commonly associated with the treatment of certain cancers, such as renal cell carcinoma and melanoma, due to its role in stimulating the growth of immune cells.

3. Erythropoietin: This is a hormone that stimulates the production of red blood cells and is used to treat anemia, particularly in chronic kidney disease or chemotherapy-induced anemia. It is not used for multiple sclerosis treatment.

4. Colony-stimulating factor: These factors are used to stimulate the production of blood cells and are often used in patients undergoing chemotherapy to help recover white blood cell counts. They are not used in the treatment of multiple sclerosis.

In summary, $\beta$-Interferon is the cytokine used in the treatment of multiple sclerosis, making it the correct answer.