Griffith Experiment

Griffith Experiment

Griffith Experiment
Materials
Heat-killed S strain
Living R strain
Mice
Procedure
Inject mice with heat-killed S strain
Inject mice with living R strain
Inject mice with mixture of heat-killed S strain and living R strain
Results
Mice injected with heat-killed S strain survived
Mice injected with living R strain survived
Mice injected with mixture of heat-killed S strain and living R strain died
Conclusion
Living R strain transformed into virulent S strain
Discovery of bacterial transformation