1. chicken igy Creative Biolabs is a professional manufacturer of chicken IgY antibodies and provides the most cost-effective chicken IgY antibody products for a variety of in vitro and in vivo studies. Chicken IgY antibodies are egg-derived antibodies which are separated and purified from chicken egg yolk, not animal serum. Without restraining the animals, it is simply a more humane and animal-friendly way to produce antibodies. There are several distinct advantages of chicken IgY antibodies compared to mammalian IgG antibodies: Higher titres against highly-conserved mammalian proteins. Chickens are not mammals and they tend to recognize any mammalian gene product as foreign, and mount vigorous immune responses. Higher specificity compared with mammalian IgG. Chicken IgY has less cross reactivity with mammalian proteins other than the immunogen. Lower background compared with mammalian IgG. IgY is structurally different from IgG in the Fc region which does not bind to IgG Fc receptors and causes less false positive staining. Chicken IgY contains a larger glycosylation index, allowing more labeling with HRP and other antibody tags. Therefore, chicken IgY antibodies are emerging as very useful molecular tools for research, diagnostics and therapeutics.