Bloody Mess Crossword

This printable crossword puzzle on the topic of Human Body Systems has 11 clues. Answers range from 3 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

What does a red blood cell contain?
What protein gives a red blood cell its flexibility?
What hormone triggers megakaryocte production?
Thromboxane and serotonin in platelets cause ____________________
Neutrophils kill bacteria by _______________________
Helper T cells ___________ the immune response
Monocytes become ________________ in tissues
Eosinophils kill __________________
Content of basophil granules
B lymphocytes become __________ when they produce antibodies
These T lymphocytes are 'natural killers'