title: Differential interferometry in the analytical ultracentrifuge. I. Design, construction, and alignment of differential interferometer.
mesh_terms: D004720:Endonucleases; D007368:Interferometry / Q000295:instrumentation*; D008027:Light; D055095:Optics and Photonics / Q000295:instrumentation; D012259:Ribonuclease, Pancreatic; D012260:Ribonucleases; D014461:Ultracentrifugation / Q000295:instrumentation*
chemical_list: D004720:Endonucleases; D012260:Ribonucleases; D012259:Ribonuclease, Pancreatic