Final answer:
Lymphocytes are not phagocytic; they are primarily involved in the adaptive immune response, as opposed to macrophages, monocytes, neutrophils, and dendritic cells, which perform phagocytosis.
Step-by-step explanation:
The cell type that is NOT phagocytic among the options provided is the lymphocyte. Macrophages, monocytes, neutrophils, and dendritic cells are all capable of phagocytosis. Lymphocytes, which include T cells and B cells as well as natural killer cells, are primarily involved in the adaptive immune response and do not typically perform phagocytosis. Instead, lymphocytes recognize and respond to specific antigens, leading to the production of antibodies (B cells) or the direct killing of infected cells or cancer cells (T cells and natural killer cells).