[Some problems on the microbiological control for germfree rearing (author's transl)].
D000336:Aerosols; D000388:Air; D000818:Animals; D005374:Filtration / Q000295:instrumentation; D005856:Germ-Free Life; D008722:Methods; D013242:Sterilization / Q000295:instrumentation*
D000336:Aerosols