title: Pneumococcal transformation--a backward view. Fourth Griffith Memorial Lecture.
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial; D004269:DNA, Bacterial / Q000032:analysis; D004352:Drug Resistance, Microbial; D006801:Humans; D007106:Immune Sera; D051379:Mice; D008967:Molecular Biology; D011008:Pneumococcal Infections / Q000276:immunology; D011135:Polysaccharides, Bacterial / Q000032:analysis; D011817:Rabbits; D051381:Rats; D013291:Streptococcus; D013296:Streptococcus pneumoniae; D014170:Transformation, Genetic; D014774:Virulence
chemical_list: D000942:Antigens, Bacterial; D004269:DNA, Bacterial; D007106:Immune Sera; D011135:Polysaccharides, Bacterial