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Immune system

Across
The third line of defence is _____.
A swallowing cell
Medicine that only works against bacterial infections
Medicine that blocks the affect of histamines
Hair like structures that trap pathogens in your respiratory tract
Medicine that intentionally introduces antigens to the body
Resistance to a disease
Y-shaped protein
An immune cell that remembers an antigen is called a _____ cell
Type of cell that kills cells infected by viruses
Down
An example of a flu pandemic
Part of the first line of defence
A higher than normal occurrence of a disease in a small area
Chemical that interferes with the ability of viruses to attack cells
Chemical that causes an allergic response
What antibodies bind to
When you don't produce antibodies yourself it is called _____ immunity
An epidemic that has spread around the world
There are ____ lines of defence
Type of cell that makes antibodies