Definition of immunoglobulin in US English:



  • Any of a class of proteins present in the serum and cells of the immune system, which function as antibodies.

    • ‘Breast milk contains a range of antimicrobial proteins, including immunoglobulins, lysozyme, and lactoferrin.’
    • ‘Polyclonal immunoglobulins and other serum proteins were present in his urine.’
    • ‘Antibodies, or Y-shaped immunoglobulins, are proteins found in the blood where they help to fight against foreign substances called antigens.’
    • ‘The passive transmission of various antibodies from intravenous immunoglobulin has been reported.’
    • ‘Each whey product varies in the amount of protein, carbohydrates, immunoglobulins, lactose, minerals, and fat in the finished product.’