ELIMINATION OF POTENTIAL SOURCES OF CONTAMINATING MATERIAL.
D001692:Biological Transport; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003080:Cold Temperature; D004583:Electrons; D008853:Microscopy; D008854:Microscopy, Electron; D011312:Pressure; D011830:Radiation Effects; D012106:Research
CHEMISTRY, PHYSICAL; COLD; EXPERIMENTAL LAB STUDY; MICROSCOPY, ELECTRON; PRESSURE; RADIATION EFFECTS