The Immune System Crossword

This printable crossword puzzle on the topic of Human Body Systems has 13 clues. Answers range from 6 to 18 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

the ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells
the first and second line of defense
the third line of defense
This is a functional system rather than an organ system
Acid, enzymes, mucin, defensins
the most abundant type of white blood cell
most voracious phagocytes derived from monocytes
When a phagocyte engulfs a harmful substance and breaks it down, what is the final step in the destruction of the material?
complement proteins/antibodies that a receptor can bind to
cells that "police" the body through blood that can kill cancer cells
triggered when body tissues are injured
cells that release histamine
an inflammatory chemical