title: A method for the biological preparation and thin-layer chromatographic purification of  14 C-protochlorophyllide a.
mesh_terms: D002247:Carbon Isotopes; D002734:Chlorophyll / Q000096:biosynthesis / Q000302:isolation & purification; D002855:Chromatography, Thin Layer; D007553:Isotope Labeling; D007982:Levulinic Acids / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D011166:Porphyrins / Q000096:biosynthesis / Q000302:isolation & purification; D013053:Spectrophotometry
chemical_list: D002247:Carbon Isotopes; D007982:Levulinic Acids; D011166:Porphyrins; D002734:Chlorophyll