Long Covid patients suffer from chronic symptoms such as fatigue or shortness of breath. As researchers have discovered, this is to some extent due to a part of our immune system called the complement ...

The complement system is a well-characterized key regulator of both innate and adaptive immunity 1,2 with over 50 known complement-related genes in rodents, consisting of complement cascade components ...

Faults in a certain part of the immune system might be at the root of some long covid cases, new research suggests. For many people, covid is an illness that blusters in and out of our lives as cases ...