What type of immune cells are lymphocytes and monocytes classified as?

Lymphocytes and monocytes are classified as agranulocytes, which means they are a type of white blood cell that has a non-granular appearance. Agranulocytes specifically include lymphocytes (such as B cells and T cells) and monocytes, which play crucial roles in the immune response. Lymphocytes are pivotal in adaptive immunity, responsible for targeting specific pathogens, while monocytes can differentiate into macrophages and dendritic cells, which are important for both innate and adaptive immunity.

In contrast to granulocytes, which contain granules in their cytoplasm (such as neutrophils, eosinophils, and basophils), agranulocytes do not have these granules. This distinction is important in understanding the functional roles of different types of immune cells.

Myeloid cells typically include granulocytes and other cells derived from the myeloid lineage, meaning they are not classified as agranulocytes. Stem cells refer to undifferentiated cells that can give rise to various cell types, which is a broader category that does not specifically apply to lymphocytes and monocytes. Thus, considering these classifications, agranulocytes is the accurate answer.