This printable word search puzzle contains 20 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.
cytotoxic T cells
immunoglobulins
natural killers
foreign agents
phagocytosis
inflammation
anaphylaxis
lymphocytes
nonspecific
penicillin
antibodies
infection
wheezing
pathogen
allergic
antigens
immunity
defence
hives
fever