New Role For Lung Epithelial Cells In Sensing Allergens In Air

Researchers have identified a new role for certain lung cells in the immune response to airborne allergens. Many foreign substances, called antigens, are inhaled daily, but the lungs have mechanisms that usually prevent people from making unwanted immune responses to these materials. Sometimes, however, immune responses are generated to these substances, resulting in allergic responses and asthma. Scientists have worked to understand what triggers these undesirable responses.

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