title: Precursor incroporation experiments in Papaver alkaloid biosynthesis. I. Papaver bracteatum lindl.
mesh_terms: D000470:Alkaloids / Q000096:biosynthesis*; D002250:Carbon Radioisotopes; D005998:Glycine / Q000378:metabolism*; D007553:Isotope Labeling; D010207:Papaver / Q000378:metabolism*; D010649:Phenylalanine / Q000378:metabolism*; D010946:Plants, Medicinal; D013797:Thebaine / Q000378:metabolism; D013997:Time Factors; D014443:Tyrosine / Q000378:metabolism*; D014508:Urea / Q000378:metabolism*
chemical_list: D000470:Alkaloids; D002250:Carbon Radioisotopes; D013797:Thebaine; D014443:Tyrosine; D010649:Phenylalanine; D014508:Urea; D005998:Glycine