Microsomes are a rich source of heme-containing metabolic enzymes, including heme-oxygenases and cytochrome P450 (CYP) enzymes, and are commonly used in the study of xenobiotic drug metabolism. Liver microsomes are subcellular particles derived from the endoplasmic reticulum of hepatic cells.

• Preparation pooled from various human donors of mixed genders

Liquid extract in a SDS-PAGE sample buffer (pH: 8,8) containing 40 mM TRIS-hydrogen chloride, 1% SDS, 50 mM DTT, 7,5% glycerol and 0,003% bromophenol blue.