Ready-to-use ELISA kits are available for the detection of Abcb1b, an alias of the protein, ATP binding cassette subfamily B member 1. The official gene symbol is ABCB1. The kits can detect several species variants of the protein, including: human, mouse, rat, bovine, chicken, primate, guinea pig, fish, and other mammalian. The protein, with a mass of 141.5 kDa and length of 1280 residues, is reported to be membrane-associated. It is a member of the ABC transporter superfamily, ABCB family, Multidrug resistance exporter (TC 3.A.1.201) subfamily and may be known by other names, including: multidrug resistance protein 1, doxorubicin resistance, P-glycoprotein 1, P glycoprotein, and ATP-dependent translocase ABCB1, and ABC20.