title: Preparation of thin self-supporting samples of liquids for external beam PIXE analyses: application to human cerebrospinal fluid.
mesh_terms: D001965:Bromides / Q000134:cerebrospinal fluid; D002118:Calcium / Q000134:cerebrospinal fluid; D002555:Cerebrospinal Fluid / Q000032:analysis*; D003300:Copper / Q000134:cerebrospinal fluid; D006801:Humans; D007501:Iron / Q000134:cerebrospinal fluid; D011188:Potassium / Q000134:cerebrospinal fluid; D011522:Protons; D013052:Spectrometry, X-Ray Emission / Q000379:methods*; D015032:Zinc / Q000134:cerebrospinal fluid
chemical_list: D001965:Bromides; D011522:Protons; D003300:Copper; D007501:Iron; D015032:Zinc; D011188:Potassium; D002118:Calcium