Isolated from tomatoes, affinity-purified Lycopersicon esculentum lectin (LEL/LEA) has a carbohydrate specificity toward GlcNac. Composed of a single stable subunit, LEL is a useful marker of tracking vasculature in rodents and in neuroscience research. This lectin has an unusually high carbohydrate content of about 50 percent arabinose and galactose. LEL is non-specific agglutinates human erythrocytes A, B, O, or AB blood types. Protease-treated erythrocytes are slightly more sensitive to agglutination by this lectin.MicroPass™ microcolumns are prepared by conjugating Separopore® 4B with affinity purified (AffyPure™) Lens culinaris (Lentil) Lectin (LCA/LCH). These microcolumns are used for MS and proteomic analysis to analyze of <100µL samples.