True or False: All leukocytes are lymphocytes.

The correct response to the statement "All leukocytes are lymphocytes" is that it is false. Leukocytes, or white blood cells, are a broad category of immune cells that include several different types, such as lymphocytes, neutrophils, monocytes, eosinophils, and basophils.

Lymphocytes are a specific subset of leukocytes that play crucial roles in the adaptive immune response. They can be further divided into B cells, T cells, and natural killer (NK) cells, each with distinct functions in immune defense. However, not all leukocytes fall into this category. For instance, neutrophils are the most abundant type of white blood cell and are key players in the innate immune response, primarily responsible for phagocytosing pathogens.

Since leukocytes encompass multiple cell types beyond just lymphocytes, the statement is false. This distinction is important as it highlights the diverse functions and roles that different leukocytes have in an effective immune response. Understanding this classification helps in the study of immunology and the mechanisms behind immune functions.