Immunoglobulins, also known as antibodies, are glycoprotein molecules produced by plasma cells (white blood cells). They act as a critical part of the immune response by specifically recognizing and binding to particular antigens, such as bacteria or viruses, and aiding in their destruction.
The various immunoglobulin classes and subclasses (isotypes) differ in their biological features, structure, target specificity and distribution.
Mammals like us have five major immunoglobulin classes: IgA, IgD, IgG, IgE, and IgM. While birds have only three: IgA, IgM, and IgY; IgY being the chicken version of mammalian IgG. But IgY has more constant region which is 4, while IgG has 3. Also note that IgM is the (only) universal Ig in vertebrates.
Mammals like us have five major immunoglobulin classes: IgA, IgD, IgG, IgE, and IgM. While birds have only three: IgA, IgM, and IgY; IgY being the chicken version of mammalian IgG. But IgY has more constant region which is 4, while IgG has 3. Also note that IgM is the (only) universal Ig in vertebrates.
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