But if you've got an allergy, your immune system sees these proteins as dangerous invaders. (tastefulpantry.com)
These vital organisms help your body defend against disease - causing bacteria, viruses, yeast and other dangerous invaders. (bodyecology.com)
This molecule, a type of sugar, has become chemically glued to a location on the virus's surface near where human antibodies — immune system watchdogs — attach to mark the virus as a dangerous invader. (scientificamerican.com)