title: Electron spin resonance in zero magnetic field of triplet states of chloroplasts and subchloroplast particles.
mesh_terms: D002736:Chloroplasts / Q000378:metabolism*; D004578:Electron Spin Resonance Spectroscopy; D008872:Microwaves; D010785:Photophosphorylation; D010788:Photosynthesis; D010944:Plants; D013050:Spectrometry, Fluorescence