The complement system is a key component of innate and adaptive immunity and therefore acts as a vital defense against invading pathogens. Deficiencies in the complement system are associated with ...

If your gut could use a little TLC, one of these supplements might do the trick.

Supplements promise better health, stronger immunity, and more energy—but nutrition experts warn that many of the most popular products may not be necessary for people who already follow a balanced ...

Complement component 3, often called C3, is an essential protein of the immune system. This protein plays a vital role in the body’s innate immune system, providing: the first line of defense against ...

Correspondence to Dr David J Hunter, Department of Rheumatology, Royal North Shore Hospital, St. Leonards, NSW 2065, Australia; david.hunter{at}sydney.edu.au Objective To investigate the efficacy and ...

Changes to serum proteins could be behind the debilitating condition known as long COVID. The findings, published in the journal Science, could pave the way for diagnosing and treating the disease.

Among people with sickle cell disease—an inherited blood disorder—acute chest syndrome (ACS) is the leading cause of death. The condition is the result of red blood cells becoming stiff, sticky, and ...

Complement 3 glomerulopathy (C3G) is a rare kidney disease that affects your body’s innate immune system (complement system). Complement 3 glomerulopathy (C3G) is a kidney disease that’s caused by ...