Vaccination

COVID-19 vaccine: Should I reschedule my mammogram?

The vaccine that prevents COVID-19 can cause swollen lymph nodes under the arm in which the shot was given. Your lymph nodes are part of your body's germ-fighting immune system. The swelling in the lymph nodes is a sign that ...

Immunology

Study reveals details of immune defense guidance system

At the beginning of an immune response, a molecule known to mobilize immune cells into the bloodstream, where they home in on infection sites, rapidly shifts position, a new study shows. Researchers say this indirectly amplifies ...

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