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Absolute Biotech

Absolute Biotech specializes in antibody reagents, kits and services, adding value to existing antibodies through annotation, validation, sequencing, engineering and recombinant manufacturing. The company unites multiple antibody-centric brands to offer customers worldwide the full breadth of antibody-related products, services and expertise for research, diagnostic and therapeutic applications. Their mission is to serve as "antibody curators" for customers worldwide, treating each antibody like a work of art to deliver unique and absolutely defined reagents that empower scientists.

Absolute Biotech

More Information about Exalpha/Nordic Mubio Brands

Eggcellent Antibodies

Chicken IgY - Why use Chickens?

  • Chickens are not mammals and therefore are more apt to make high-avidity antibodies to mammalian antigens (especially highly conserved mammalian proteins).
  • To our knowledge, it is the most humane way to produce polyclonal antibodies. There is no need to bleed the chicken. Simply collect the eggs.
  • A single chicken can produce an enormous amount of antibody, up to 3 grams of IgY per month, which is 10-20 times the amount of a rabbit. Furthermore, compared to rabbits, chickens produce antibody much quicker.
  • Fc region of chicken IgY is sufficiently different from mammalian IgG:
  • Reduces background by not binding to mammalian rheumatoid factors or other naturally occurring anti-mammalian antibodies (e.g. HAMA).
  • Does not activate mammalian complement systems.
  • To our knowledge, it is the most humane way to produce polyclonal antibodies. There is no need to bleed the chicken. Simply collect the eggs
  • Does not bind to mammalian Fc receptors.
  • Does not bind to standard immunoglobulin-binding proteins such as protein A (Staphylococcus aureus), protein G (Streptococcus sp.), or protein L (Peptostreptococcus magnus).
  • IgY is a stable antibody and may be enzyme-labeled, biotinylated and gold–labeled by standard procedures.

Gallus brand has over 100 Chicken polyclonal primary antibodies...

  • Epitope Tags
  • Food Proteins
  • Fusion Proteins
  • Human Immunoglobulins and Proteins
  • Mammalian Immunoglobulins and Proteins
  • Microbial Antigens

Protein A, Protein G or Protein L

.. and over 100 secondary antibodies:

The Gallus range of secondary antibodies are produced in chicken against a wide range of mammalian targets including Bovine, Cervid, Rat, Dog, Horse, Human, Mouse, Pig, Rabbit and Sheep (detecting IgG heavy and light chains, Fc region, Fab fragments, IgM and Light chains (Lambda and Kappa). Gallus also have a range of anti Chicken IgY, IgM and IgA antibodies (detecting heavy and light chains, Fab or Fc) for use with their chicken primary antibodies.


  • Antibodies conjugated to multiple labels including Biotin, FITC, horseradish peroxidase, agarose.
  • Range of control antibodies eg, Normal Goose IgY, Normal Chicken IgY
  • Kits: EggsPress IgY purification kits for customers to purify their own antibodies from chicken eggs.
  •  Custom services available: IgY production in Chicken, IgY purification, Affinity purification if required and peptide synthesis.