title: Adenosine tetraphosphate analysis: polyethyleneimine (PEI) thin layer purification and firefly-extract liquid scintillation quantitation.
mesh_terms: D000227:Adenine Nucleotides / Q000032:analysis / Q000302:isolation & purification*; D000255:Adenosine Triphosphate; D000818:Animals; D001151:Arsenic; D002852:Chromatography, Ion Exchange; D002855:Chromatography, Thin Layer; D005069:Evaluation Studies as Topic; D007097:Imines; D007313:Insecta / Q000201:enzymology; D007700:Kinetics; D008027:Light; D008156:Luciferases / Q000378:metabolism; D008722:Methods; D011095:Polyethylenes; D012588:Scintillation Counting; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000227:Adenine Nucleotides; D007097:Imines; D011095:Polyethylenes; D000255:Adenosine Triphosphate; D008156:Luciferases; D001151:Arsenic