V(D)J recombination allows the vertebrate immune system to generate a diverse array of antigen receptors. Because this process introduces double-strand DNA breaks millions of times each day, it is ...

These symptoms are an allergic reaction to triggers like dust mites, pet dander, or pollen. The goal of allergy treatment is to reduce eyelid swelling, itching, and redness. Avoiding allergens is ...

Here’s how to tell and what to do if you have an allergic reaction to sunscreen. However, for some people, applying certain types of sunscreen can also cause a skin allergy. Sunscreen allergies ...