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1 ore 7 min, 19 magg 1923 anni - Ramon y Glenny

Descrizione:

Gaston Ramon (1886-1963), un veterinario del Instituto Pasteur en Francia, desarrolló el toxoide de la difteria. De manera independiente, en los Wellcome Research Laboratoriesde Londres, el doctor Alexander Thomas Glenny (1882-1965) hizo lo mismo.
https://www.google.com.mx/search?q=vacunas+linea+del+tiempo&oq=VACUNAS+LINEA&aqs=chrome.0.69i59j69i57j0l4.4163j0j7&sourceid=chrome&ie=UTF-8

Aggiunto al nastro di tempo:

Vacunación

ByReDCid UvU
16 nov 2017
0
0
417

Data:

1 ore 7 min, 19 magg 1923 anni
Adesso
~ 102 years ago

Immagini:

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