immune

The drug targets certain immune cells involved in inflammation and myelin damage in MS.

It can occur as part of the initial disease, it can be an immune reaction that occurs just afterwards, or it can occur years down the line.

"While we are trained to deal with it, we don't face it every day, so we're not really immune to it."

Those maternal antibodies protect infants while their immune system matures.

Over the past three years, thousands of litres of blood from donors across England has been stored and now it has been turned into immunoglobulin, which helps the body's immune response.