What Are Active and Passive Immunity? Your immunity grows stronger when there are antibodies to illnesses and diseases present. Antibodies’ purpose is to damage or kill foreign organisms that enter ...

As women age, they produce an increasing number of “killer” immune cells, which hunt down and destroy infected cells. This discovery, and the fact that the same isn’t true of men, could help to ...

A person's immune response to variants of SARS-CoV-2, the virus that causes COVID-19, depends on their previous exposure - and differences in the focus of immune responses will help scientists ...