Serological investigations on the polylysogeny of micrococci.

Specific antisera against 11 micrococcal phages could be produced by immunization of rabbits. Using the neutralisation test all antisera were tested against their homologous and heterologous phages. The corresponding K-values were calculated. It could be demonstrated that phages coming from the same micrococcal donor strain can be of different genetical relationship. Therefore it was concluded that micrococci can be not only lysogenic but also polylysogenic.