bacteriocins in neisseria meningitidis. screening of systemic patient strains and pharyngeal isolates from healthy carriers. | systemic meningococcal isolates and meningococci from healthy pharyngeal carriers in norway were screened for production of growth antagonistic substances. seven (4.9%) of a total of 142 systemic strains and 3 (2.1%) of 140 carrier isolates spontaneously released diffusible growth antagonistic substances. properties shown by these substances complied with the criteria used in the definition of a bacteriocin. a cluster of producers among systemic strains registered during the first half of 1975 i ... | 1996 | 8611195 |