Examine the experiments that Griffith performed using rough and smooth pneumococcus bacteria.
what type of material is being injected into the mouse
And
what effect it has on the mouse.
(There is a picture from left to right:
Rough strain (nonvirulent) = mouse survives
Smooth strain (virulent) = death of mouse
Heat-killed smooth stain = mouse survives
Rough strain & heat-killed smooth strain = Death of mouse)