title: A factor inactivating in vitro transforming DNA isolated from transformable group H streptococci and its relation to competence of the cells.
mesh_terms: D003470:Culture Media; D004269:DNA, Bacterial / Q000378:metabolism*; D013291:Streptococcus / Q000378:metabolism*; D013997:Time Factors
chemical_list: D003470:Culture Media; D004269:DNA, Bacterial