Maud Perry Menzies

Maud Perry Menzies

Bacilli of Diptheria from a Culture. Courtesy of the Wellcome Collection under the terms of the Creative Commons Attribution 4.0 International license (CC BY 4.0)

Bacilli of Diptheria from a Culture. Courtesy of the Wellcome Collection under the terms of the Creative Commons Attribution 4.0 International license (CC BY 4.0