This printable word search puzzle on the topic of Human Body Systems contains 14 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.
White blood cell
immune response
mucus membrane
leukopenia
antibodies
leukocyte
Pathogens
bacteria
Vaccine
attack
virus
germs
skin
sick