truth0669 truth0669

20-12-2017
Biology

contestada

The sneezing, runny nose, and itchy eyes associated with allergies are caused when
A. smooth muscles reduce the size of air passageways in the lungs.
B. the immune system attacks the body’s own cells.
C. mast cells release histamines.
D. infected cells produce interferon.

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Ellaphaba Ellaphaba

20-12-2017

B. when the immune system attacks the body's own cells

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