Description_x000D_ General description_x000D_ Immunoglobulin G (IgG) belongs to immunoglobulin family and consists of gamma (γ) heavy chain in the constant (C) region. IgG is a widely expressed serum antibody. Monomeric structure of IgG constitutes two identical heavy chains and two identical light chains with molecular weight of 50kDa and 25kDa respectively, the primary structure of this antibody also contains disulfide bonds involved in linking the two heavy chains, linking the heavy and light chains and resides inside the chains. IgG is further subdivided into four classes namely, IgG1, IgG2, IgG3, and IgG4 with different heavy chains, named γ1,γ2, γ3, and γ4, respectively. IgG is produced and released from CD5+B cells, the predominant lymphocytes in the neonatal cell repertoire. Maternal IgG is the only antibody transported across the placenta to the fetus. Maternal IgG passively immunizes the infants._x000D_ CF™ dyes are a series of highly water-soluble fluorescent dyes, with wavelength extended over the visible and near-infrared (IR) spectrum for labelling biomolecules, mainly proteins and nucleic acids. Primary structure of the CF™ dyes is either cyanine dyes or rhodamine dyes. CF™ 633 produce the brightest antibody conjugates among spectrally similar dyes when excited by the 633nm He-Ne laser or the 635nm red diode laser. The most important advantage of CF™ 633 is its excellent photostability. Molecular weight of CF™ 633 is ~820 and its absorption/emission maxima is at 630/650nm._x000D_ Specificity_x000D_ Binds all rabbit IgGs (minimal cross-reaction with human, mouse, rat serum proteins)_x000D_ Immunogen_x000D_ rabbit IgG (H+L)_x000D_ Physical form_x000D_ Supplied in phosphate buffered saline with 0.05% sodium azide, 50% glycerol and 2 mg/mL bovine serum albumin._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_ Legal Information_x000D_ This product is distributed by Sigma-Aldrich Co. under the authorization of Biotium, Inc. This product is covered by one or more US patents and corresponding patent claims outside the US patents or pending applications owned or licensed by Biotium, Inc. including without limitation: 12/334,387; 12/607,915; 12/699,778; 12/850,578; 61/454,484. In consideration of the purchase price paid by the buyer, the buyer is hereby granted a limited, non-exclusive, non-transferable license to use only the purchased amount of the product solely for the buyer’s own internal research in a manner consistent with the accompanying product literature. Except as expressly granted herein, the sale of this product does not grant to or convey upon the buyer any license, expressly, by implication or estoppel, under any patent right or other intellectual property right of Biotium, Inc. Buyer shall not resell or transfer this product to any third party, or use the product for any commercial purposes, including without limitation, any diagnostic, therapeutic or prophylactic uses. This product is for research use only. Any other uses, including diagnostic uses, require a separate license from Biotium, Inc. For information on purchasing a license to use this product for purposes other than research, contact Biotium, Inc., 3159 Corporate Place, Hayward, CA 94545, Tel: (510) 265-1027. Fax: (510) 265-1352. Email: btinfo@biotium.com._x000D_ CF is a trademark of Biotium, Inc._x000D_ Features and Benefits_x000D_ Evaluate our antibodies with complete peace of mind. If the antibody does not perform in your application, we will issue a full credit or replacement antibody. Learn more._x000D_ Preparation Note_x000D_ Protect from light.