Purity ~95% (SDS-PAGE). CD68, also known as macrosialin, is a member of the lysosomal/endosomal-associated membrane glycoprotein (LAMP) family. It is expressed on monocytes/macrophages. It is found in cytoplasmic granules and in the cytoplasm of various non-hematopoietic tissues including liver and kidney tubules and glomeruli. CD68 is also found on the surface of macrophages, monocytes, neutrophils, basophils and large lymphocytes. Source: Recombinant protein corresponding to aa22-319 from human CD68 protein, fused to His-Tag at C-terminal, expressed in insect cell. Molecular Weight: ~32.6kD (307aa), 57-70kD (SDS-PAGE under reducing conditions.) Endotoxin: <1EU/1ug (determined by LAL method) AA