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2. Definition de quelques termes relatifs a la lysogénie;Jacob;Ann. inst. Pasteur,1953
3. Elimination of genetic elements governing competence in transformation of Neisseria meningitidis by treatment with ethidium bromide and acriflavin;Jyssum;Acta path. microbiol. scand. Sect. B,1971
4. Influence of osmotic pressure on transformable and non transformable variants of Neisseria meningitidis 2. Growth and induction of autolysis;Jyssum;Acta path. microbiol. scand. Sect. B,1975
5. Separation of Neisseria meningitidis competence variants by sucrose gradient centrifugation;Jyssum;Acta path. microbiol. scand. Sect. B,1976