Description_x000D_ Specificity_x000D_ The antibody reacts with an epitope on the rat λ light chain found in various rat immunoglobulin classes and subclsasses. No cross-reactivity is observed with rat κ chains or with IgG from human, mouse, bovine, rabbit, goat, sheep, horse, dog, chicken, pig or cat. Weak cross-reactivity is observed with guinea pig IgG._x000D_ Disclaimer_x000D_ Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals._x000D_ Biochem/physiol Actions_x000D_ Immunoglobulins (Ig) are produced by the B cells and play crucial role in host humoral immune response. A typical immunoglobulin consists of two heavy chains and two light chains. The two light chains are either κ or the λ chain. The B cells express one type of light chain during their life time.