title: A spin-labeled hapten.
mesh_terms: D000937:Antigen-Antibody Reactions; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004578:Electron Spin Resonance Spectroscopy; D005470:Fluorometry; D006241:Haptens; D009281:Naphthalenes; D011759:Pyrrolidines
chemical_list: D006241:Haptens; D009281:Naphthalenes; D011759:Pyrrolidines