Which two leukocytes are agranulocytes?

Which two leukocytes are agranulocytes?

• A. Neutrophils and Lymphocytes
• B. Lymphocytes and Monocytes
• C. Monocytes and Eosinophils
• D. Basophils and Neutrophils

Answer: (B)

Leukocytes are grouped by whether their cytoplasm shows visible granules. Cells with granules are granulocytes, including neutrophils, eosinophils, and basophils. Those without visible granules are agranulocytes, which are lymphocytes and monocytes. Lymphocytes are central to adaptive immunity, with B cells making antibodies, T cells coordinating responses, and NK cells attacking infected or abnormal cells. Monocytes patrol the blood and, upon entering tissues, become macrophages that engulf pathogens and present antigens to other immune cells. The other cell types listed are granulocytes, so they are not agranulocytes. Therefore, the two agranulocytes are lymphocytes and monocytes.

Leukocytes are grouped by whether their cytoplasm shows visible granules. Cells with granules are granulocytes, including neutrophils, eosinophils, and basophils. Those without visible granules are agranulocytes, which are lymphocytes and monocytes. Lymphocytes are central to adaptive immunity, with B cells making antibodies, T cells coordinating responses, and NK cells attacking infected or abnormal cells. Monocytes patrol the blood and, upon entering tissues, become macrophages that engulf pathogens and present antigens to other immune cells. The other cell types listed are granulocytes, so they are not agranulocytes. Therefore, the two agranulocytes are lymphocytes and monocytes.