[PRODUCTION AND PRESERVATION OF EFFICIENT STRAINS OF MICROORGANISMS].
D005823:Genetics; D008829:Microbiology; D009154:Mutation; D011309:Preservation, Biological; D012106:Research; D013672:Technology
EXPERIMENTAL LAB STUDY; GENETICS; MICROBIOLOGY; MUTATION; TECHNOLOGY
GEWINNUNG UND ERHALTUNG LEISTUNGSFAEHIGER STAEMME VON MIKROORGANISMEN.