title: A new procedure for the determination of chlorophylls a and b and its application to normal and regreening Chlorella.
mesh_terms: D000096:Acetone; D002708:Chlorella / Q000032:analysis*; D002734:Chlorophyll / Q000032:analysis*; D002736:Chloroplasts / Q000032:analysis; D005069:Evaluation Studies as Topic; D006863:Hydrogen-Ion Concentration; D008433:Mathematics; D008722:Methods; D009584:Nitrogen / Q000378:metabolism; D010788:Photosynthesis; D010944:Plants; D011725:Pyridines; D013045:Species Specificity; D013053:Spectrophotometry
chemical_list: D011725:Pyridines; D000096:Acetone; D002734:Chlorophyll; D009584:Nitrogen