title: EPR spectra of photosystem I constituents in heterocyst preparations from Anabaena cylindrica.
mesh_terms: D002734:Chlorophyll / Q000032:analysis; D000458:Cyanobacteria / Q000648:ultrastructure*; D003580:Cytochromes / Q000032:analysis; D004578:Electron Spin Resonance Spectroscopy; D007506:Iron-Sulfur Proteins / Q000032:analysis; D010785:Photophosphorylation; D010940:Plant Proteins / Q000032:analysis
chemical_list: D003580:Cytochromes; D007506:Iron-Sulfur Proteins; D010940:Plant Proteins; D002734:Chlorophyll