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.

It was called ‘complement’ because it aided the antibacterial activity of antibodies. However, it is now known that the complement system can be activated early in an infection without the presence of ...

The complement system is activated in many rheumatic diseases, as evident from deposition of activation fragments in affected tissue, decreased residual complement function and increased levels of ...

Thrombo-inflammation happens when blood clotting, also known as thrombosis, and inflammation occur together. This overlap leads to a number of medical complications and occurs in diseases like sepsis, ...