Parts of The Immune System

Lymphatic system
Thymus
Lymph Nodes
Bone Marrow

Bones
Tonsils
Lymphocytes
Spleen
Appendix

Helper T-cells
B-Cells
Natural Killer Cells
Antibodies

Monocytes
Blood
White Blood Cells
...and more...

Adenoids
Macrophages
Phagocytes
Cytotoxic T Lymphocytes