This printable word search puzzle on the topic of Human Body Systems contains 17 hidden words in a 24x24 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
Passive acquired immunity
Interstitial Fluid
Acquired Immunity
Natural immunity
Thoracic duct
Lymph vessels
Lymphocytes
Lymph nodes
Vaccination
Antibodies
Macrophage
T-cells
Tonsils
B-cells
Thymus
Spleen
Lymph