Immune cells provide free rides for invading parasites.
When it comes down to it, it's your immune system versus the world. From "innate" immunity — which protects your body against basic threats — to "adaptive" immunity, which homes in on specific targets, your immune system has you covered. Sometimes, however, your immune system can turn against you, leading to autoimmune diseases. To keep up with all things immune, check here for the latest news.
People who can detect bitter flavors in foods may also have immune systems with better 'early warning' systems, a new study finds.
During pregnancy women's organs contain placental cells, along with immune and connective tissue cells from the fetus.
The body's killer T cells, also called Cytotoxic cells, identify and destroy infected or cancerous cells without harming healthy cells nearby.
Exposure to PFCs is associated with a decreased immune response to childhood vaccinations, but these findings are not an immediate public health concern, experts say.