Jacques-Joseph Grancher

He learned histological techniques with Louis-Antoine Ranvier and Victor André Cornil in their private laboratory on Rue Christine, and for several years served as director of a pathological anatomy laboratory in Clamart (1868–1878).

He was a pioneer in the creation of safeguards for the prevention of childhood tuberculosis, and was an advocate of isolation and antisepsis in the fight against the disease.

In 1897 with Jules Comby (1853–1947) and Antoine Marfan (1858–1942), he published "Traité des maladies de l’enfance" (Treatise of the Diseases of Childhood).

In 1885, Grancher and Alfred Vulpian (1826–1887) were instrumental in convincing Louis Pasteur (1822–1895) to perform the first successful vaccination against rabies on Joseph Meister, a 9-year-old boy who had been mauled by a rabid dog.

In 1887 at the request of Pasteur, Grancher defended the rabies vaccination to the Académie de Médecine, citing its successful survival rate.