Griffith demonstrated transformation with -
Griffith in 1928 found that mice died when injected with a mixture of live non-capsulated (R) pneumococci and heat killed capsulated (S) pneumococci, neither of which separately proved fatal. REF:Ananthanarayan and Panicker's Textbook ofMicrobiology 8thEdition pg no:63
H. influenzae
E. coli
Proteus
Pneumococcus
general microbiology