Lycopersicon esculentum (Tomato) Lectin (LEL) Fluorescein is a plant lectin that can be used as a probe to specifically bind biomolecules (such as polysaccharides , peptides , etc.).Lycopersicon esculentum (Tomato) Lectin (LEL) Fluorescein is a biological material or organic compound that can be used in life science research.