This printable word search puzzle on the topic of Human Body Systems contains 23 hidden words in a 17x17 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.
Activation
restricted
artifical
granzymes
perforins
Cytokines
CYtotoxic
immunity
infected
chemical
passive
natural
virally
Binding
Diverse
Complex
active
animal
cancer
Helper
human
APC
MHC