Biosynthesis of pteridines in the skin of the tadpole, Rana catesbeiana.
D000818:Animals; D001001:Anura; D002247:Carbon Isotopes; D002845:Chromatography; D002854:Chromatography, Paper; D008675:Metamorphosis, Biological; D009705:Nucleosides / Q000378:metabolism; D011621:Pteridines / Q000096:biosynthesis*; D012867:Skin / Q000378:metabolism*; D013053:Spectrophotometry; D014466:Ultraviolet Rays
D002247:Carbon Isotopes; D009705:Nucleosides; D011621:Pteridines