31 lugl 1873 anni - Hansens disease germ first discovered
Descrizione:
Dr. Gerhard Henrik Armauer Hansen of Norway was the first person to identify the germ that causes leprosy under a microscope. Hansen's discovery of Mycobacterium leprae proved that leprosy was caused by a germ, and was thus not hereditary, from a curse, or from a sin.Aggiunto al nastro di tempo:
Data:
31 lugl 1873 anni
Adesso
~ 151 years ago