Haemolysins of Vibrio parahaemolyticus strains passaged in mice.

ABSTRACT

Some phenotypically non-haemolytic strains of V. parahaemolyticus were observed to produce haemolysins after two passages in mices. Depending on the strain, both heat stable and heat labile haemolysins were induced. The heat stable haemolysin so induced, was immunologically different from the thermostable direct haemolysin produced by Kanagawa positive strains of V. parahaemolyticus.