sentences:  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).From 1885 until his death in 1907, he was director of Hôpital des Enfants Malades.In 1900 he was elected vice-chairman of the board of directors at the Pasteur Institute.