This printable word search puzzle on the topic of Human Body Systems contains 15 hidden words in a 24x24 letter grid. Words go horizontally and vertically. This word search is also available to download as a Microsoft Word document or a PDF.
natural killer cells
mechanical barrier
species resistance
chemical barriers
lymphatic pathway
immune response
phagocytosis
inflammation
antigens
adaptive
pathogen
innate
spleen
fever
lymph