title: Reciprocal transfer of penicillin resistance genes between Streptococcus pneumoniae, Streptococcus mitior and Streptococcus sanguis.
authors.forename: E
authors.initials: E
authors.lastname: Potgieter
authors.forename: L J
authors.initials: LJ
authors.lastname: Chalkley
mesh_terms: D010403:Penicillin Resistance / Q000235:genetics*; D013291:Streptococcus / Q000235:genetics*; D013296:Streptococcus pneumoniae / Q000235:genetics*; D013298:Streptococcus sanguis / Q000235:genetics*; D014169:Transformation, Bacterial