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Photo caption: Wallace with a monkey. May 1966. Laboratory monkey, a participant in the developmental work on the new attenuated rubella HPV-77 virus strain at NIH, is inspected by Drs. Harry M. Meyer, Jr. (left) and Paul D. Parkman (right), assisted by Rudyard Wallace, technician (center). The Parkman-Meyer research team, of the Division of Biologics Standards, tamed the rubella virus by subjecting it over a two year period to 77 passages in primary African green monkey kidney cell cultures. National Institutes of Health photo.
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