Protein A beads have been widely used for IgG purification. BioVision’s Protein A (Cat. No. 6500) is a genetically engineered protein containing five IgG-binding regions of native Protein A. Maximum IgG specificity is achieved by eliminating its cell wall binding region, albumin binding region, and other non-specific regions. ToxOutTM Protein A-Sepharose beads (Cat.# M1300) for IgG purification contain covalently coupled recombinant Protein A to 6% cross-linked sepharose beads, the most popular resin for protein purification. BioVision’s ToxOutTM Protein A (Sepharose) Spin Antibody Purification Kit is a simple, ready to use kit for endotoxin-free IgG purification and immunoprecipitation. This kit can rapidly purify IgG from serum, ascites and cell culture media from various species such as human, mouse, rat, goat and rabbit.