Antibodies, or immunoglobulins, are proteins made by the body that help fight against foreign substances called antigens.

A complete list of symptoms for Long Haul Covid or Chronic Covid Syndrome. Educate yourself about the symptoms and seek help from qualified healthcare professionals

The SERPINA1 gene provides instructions for making a protein called alpha-1 antitrypsin, which is a type of serine protease inhibitor (serpin)

The polymerase chain reaction (PCR) is a fast and inexpensive technique used to "amplify" - copy - small segments of DNA to enable testing.