title: On the identity of the 640-nm component observed in chlorophyll b absorption spectra in vivo.
mesh_terms: D000096:Acetone; D002734:Chlorophyll / Q000032:analysis* / Q000302:isolation & purification; D002736:Chloroplasts / Q000032:analysis; D008433:Mathematics; D010860:Pigments, Biological / Q000302:isolation & purification; D059828:Plant Cells; D010944:Plants / Q000032:analysis*; D012624:Seaweed / Q000032:analysis; D013053:Spectrophotometry
chemical_list: D010860:Pigments, Biological; D000096:Acetone; D002734:Chlorophyll