The innate immune response causes the common signs of inflammation including swelling, pain, heat, redness and loss of function. Brandon Daniel/Flickr

Explainer: how does the immune system work?

The immune system is critical for protecting against illness-causing organisms, such as viruses, bacteria and fungi, which are collectively known as pathogens. Without it, we would quickly become infected…
When cells attack - autoimmune disease develop when immune cells mistakenly attack a part of the body. Ari Moore/Flickr

Explainer: what are autoimmune diseases?

Autoimmune diseases, which include a range of around 80 different illnesses from rheumatoid arthritis to type 1 diabetes and multiple sclerosis, occur when the immune system attacks the body. These diseases…

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