Question

Your lab partner has switched to another section. You realize that he has mixed up many of your bacterial strains, so you cannot figure out which strain corresponds to which strain. You perform the following experiments: a) strains A and B were together injected into mice. The mice died. b) strains B and D were together injected into mice. The mice died. c) heated strain B and heated strain C were injected into mice. The mice lived. d) strain C and heated strain A were injected into mice. The mice lived. e) strain A and heated strain C were injected into mice. The mice died. f) strain D and strain C were injected into mice. The mice died.

Which strains are virulent, which strains are not virulent, and which strains can you not tell?