What type of cell is a lymphocyte?

Lymphocytes are classified as agranulocytic leukocytes, which means they are a type of white blood cell that lacks granules in their cytoplasm. This classification highlights their role in the immune response, as lymphocytes are crucial for defending the body against infections and foreign substances. They come in various forms, primarily T cells and B cells, which are involved in cell-mediated and humoral immunity, respectively.

This distinction as an agranulocytic leukocyte is significant because it differentiates them from granulocytes, another category of white blood cells that do contain granules and have different functions in immune responses. Understanding the nature of lymphocytes as agranulocytic helps clarify their role and importance in the immune system.