[PRODUCTION OF A NONCAPSULATED TYPE 2 PNEUMOCOCCUS VARIANT].
D001431:Bacteriological Techniques; D006801:Humans; D009154:Mutation; D013296:Streptococcus pneumoniae; D014465:Ultrasonics
BACTERIOLOGICAL TECHNICS; DIPLOCOCCUS PNEUMONIAE; MUTATION; ULTRASONICS
POLUCHENIE BESKAPSUL'NOGO VARIANTA PNEVMOKOKKOV VTOROGO TIPA.