title: Polychromator for recording optical absorbance changes from single cells.
mesh_terms: D000669:Amplifiers, Electronic; D000818:Animals; D001150:Arsenazo III; D002118:Calcium / Q000032:analysis / Q000378:metabolism; D006737:Horseshoe Crabs; D008839:Microelectrodes; D008853:Microscopy / Q000295:instrumentation* / Q000379:methods; D009474:Neurons / Q000502:physiology*; D055095:Optics and Photonics / Q000295:instrumentation*; D013050:Spectrometry, Fluorescence / Q000295:instrumentation* / Q000379:methods
chemical_list: D001150:Arsenazo III; D002118:Calcium