title: Urea and pyridine in Feulgen staining of Bryophyllum.
mesh_terms: D006863:Hydrogen-Ion Concentration; D008722:Methods; D010944:Plants; D011725:Pyridines; D013194:Staining and Labeling; D014508:Urea
chemical_list: D011725:Pyridines; D014508:Urea