This printable word search puzzle 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.
auto immune disease
bone marrow
protection
lymphocyte
antibiotic
lymphatic
platelets
leukocyte
pathogen
antibody
immunity
bacteria
vaccine
antigen
thymus
virus
skin