Oswald Avery at work in the laboratory, around 1930.
In 1944, Oswald Avery and his colleagues, Colin MacLeod and Maclyn McCarty published their landmark paper on the transforming ability of DNA.
Oswald Avery's team proves that DNA, not protein, is the genetic molecule.
Avery at a 1940 Christmas party.
Commenting on Avery as a scientific group leader and as a person.
Relating how Avery was a successful orator while an undergraduate at Colgate University, and his subsequent disdain for public speaking as a scientist.
Describing the in vitro transformation experiments: the effect of removing polysaccharides from the bacterial extracts.
Characterizing the resistence to the discovery of DNA as the transforming factor: running against existing dogma.
Describing the in vitro transformation experiments: the effect of destroying nucleic acids.
How the bacterial transformation experiments provided the first real opportunity to study the chemical nature of the gene.