title: Letter: X-ray microanalysis of human chromosomes.
mesh_terms: D002118:Calcium / Q000032:analysis; D002875:Chromosomes / Q000032:analysis*; D004247:DNA / Q000032:analysis; D006801:Humans; D007501:Iron / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D008854:Microscopy, Electron; D010758:Phosphorus / Q000032:analysis; D012313:RNA / Q000032:analysis; D012730:Sex Chromosomes / Q000032:analysis*; D013057:Spectrum Analysis; D014961:X-Ray Diffraction; D015032:Zinc / Q000032:analysis
chemical_list: D010758:Phosphorus; D012313:RNA; D004247:DNA; D007501:Iron; D008274:Magnesium; D015032:Zinc; D002118:Calcium