Final answer:
Astrocyte is not a type of lymphatic cell; it is instead a glial cell in the central nervous system. Macrophages, dendritic cells, lymphocytes (T cells, B cells, and NK cells), all play roles in the immune system and are considered lymphatic cells.
Step-by-step explanation:
The cell that is not a type of lymphatic cell is: E) Astrocyte. Macrophages, dendritic cells, lymphocytes, including B cells, T cells, and natural killer (NK) cells, are all crucial components of the immune system and have varying roles. Macrophages and dendritic cells are involved in phagocytosis and can either directly destroy pathogens or present antigens to T cells to initiate the adaptive immune response. Lymphocytes, including T cells and B cells, are derived from lymphoid stem cells, and upon antigen exposure, B cells can differentiate into plasma cells, which produce antibodies.
Astrocytes, on the other hand, are star-shaped glial cells in the brain and the spinal cord and are involved in forming the blood-brain barrier, providing nutrients to nervous tissue, and repairing the brain and spinal cord following traumatic injuries. They are not involved in the lymphatic system or immune response but are part of the nervous system's support cells.