title: A microscope photometric method for the determination of proteins in solutions and homogenates at the nanogram level.
abstract: A micromethod for the determination of the protein content of biological material is described. Using this method, which is based on the decrease in absorbance of a solution of amido black, protein concentrations up to 120 ng in a 4 microliter sample can be accurately determined.
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D006801:Humans; D008832:Microchemistry; D009419:Nerve Tissue Proteins / Q000032:analysis*; D010783:Photometry / Q000295:instrumentation / Q000379:methods; D011506:Proteins / Q000032:analysis*; D051381:Rats; D012709:Serum Albumin
chemical_list: D009419:Nerve Tissue Proteins; D011506:Proteins; D012709:Serum Albumin