Source:http://linkedlifedata.com/resource/umls/id/C0023688
MSH: A molecule that binds to another molecule, used especially to refer to a small molecule that binds specifically to a larger molecule, e.g., an antigen binding to an antibody, a hormone or neurotransmitter binding to a receptor, or a substrate or allosteric effector binding to an enzyme. Ligands are also molecules that donate or accept a pair of electrons to form a coordinate covalent bond with the central metal atom of a coordination complex. (From Dorland, 27th ed),CSP: molecule that binds to another molecule, especially a small molecule that binds specifically to a larger molecule.,NCI: An ion, molecule or molecular group that binds to a substance to form a larger complex. (Dr. Joseph A. Thie)