What is a characteristic of monocytes?

Monocytes are a type of white blood cell that plays a crucial role in the immune system. One of their defining characteristics is that they are agranular, meaning they lack the cytoplasmic granules that are found in other types of leukocytes, such as neutrophils and basophils. Additionally, they possess strong phagocytic abilities, allowing them to engulf and digest pathogens such as bacteria and dead or damaged cells.

Their role in the immune response is significant, as they can differentiate into macrophages and dendritic cells after migrating into tissues, further enhancing their phagocytic capabilities and presenting antigens to T cells. This dual functionality of being agranular and phagocytotic highlights their importance in both innate and adaptive immunity.