Art Resource - AR918196

US President William McKinley and Vice-President Theodore Roosevelt, 1899 (1951).

AR980095

Oswald Theodore Avery, Canadian-born American bacteriologist and molecular biologist.

Oswald Theodore Avery, Canadian-born American bacteriologist and molecular biologist. Pictured at work in a laboratory examining a Petri dish of culture. Avery (1877-1955) was one of the founders of the science of immuno-chemistry.

Unique Identifier AR918196

Type Image

Purpose Public

Size 3671px × 2856px

Photo Credit HIP / Art Resource, NY

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