Spain
first day cover features a cachet and stamp showing Wilhelm Conrad
Roentgen, the discoverer of the X-ray. The
stamp was issued to commemorate the first European Congress of Radiology.
**
IV-05 1967 Spain stamp commemorates the first European Congress of Radiology. The stylized portrait of Roentgen is accompanied by a modern X-ray tube and the atomic symbol.
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Médecine
3534 : Santiago Ramon y Cajal (histologiste) Prix Nobel en 1906
avec Camillo Golgi (structure du système nerveux)
3535 : Severo Ochoa (biochimiste) Prix Nobel en 1906
avec Arthur Kornberg (mécanisme de la synthèse biologique de l'ADN)
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