title: Proton microbeam analysis in air.
mesh_terms: D000388:Air; D000818:Animals; D006224:Cricetinae; D004602:Elements; D008168:Lung / Q000032:analysis; D011522:Protons; D013057:Spectrum Analysis / Q000295:instrumentation / Q000379:methods*; D014965:X-Rays
chemical_list: D004602:Elements; D011522:Protons