title: Optical density measurement of ultramicrovolumes of liquid.
mesh_terms: D000249:Adenosine Monophosphate / Q000032:analysis; D005898:Glass; D008722:Methods; D008832:Microchemistry; D012996:Solutions; D013053:Spectrophotometry / Q000295:instrumentation*; D013056:Spectrophotometry, Ultraviolet / Q000295:instrumentation*; D013594:Syringes
chemical_list: D012996:Solutions; D000249:Adenosine Monophosphate