Griffith and Avery
To determine if DNA or proteins are responsible
for genetic coding
1928 - While attempting to work towards a
vaccine for pneumonia, Griffith tested if mice
would survive when he injected different strains
of the disease into them. The mice injected with
a mixture of heat-killed viral pneumonia and live
non-viral pneumonia unexpectedly died
1944 - Isolated the "transforming principle" from
Griffith's experiment and then chemically tested
it to rule out possibilities for what it could be
(1 Jan 1928 Jahr – 1 Jan 1944 Jahr)