Topic 1.5 and 1.6: The Immune System Crossword

The body system that defends the body against infection and disease-causing substances such as bacteria, viruses, and cancer cells.
swelling and redness at the size of an infection, caused by disease-fighting substances in the blood; part of an immune response.
a type of white blood cell that fights infection by swallowing up pathogens.
specific particles created by the immune system to destroy specific disease-causing invaders
any substance the body cannot recognize; usually a non-living particle
an organism or substance that can cause a disease
a type of white blood cell that recognizes antigens present in the body and produces specific antibodies to fight them
specialized white blood cells that fight disease either by activating B cells (helper T cells) or by attacking antigens directly
an unusually high sensitivity to a substance, which causes an immune reaction
a special version of an antigen that provides immunity against a disease
the occurrence of disease cases above the normal amount expected for a population in a defined area
same definition as an epidemic, but often used to refer to a limited geographic area
an epidemic that has spread over several countries or continents, or around the world
a substance that fights infections by interfering with the life processes of bactera